SUN SUN HW-303B-304B CANNISTER + UV LAMP
Key Additional Features:
Self-priming pump — The filter is advertised as having a self-priming mechanism, to reduce the need for manual siphoning.
Adjustable spray bar — Allowing better water return distribution / flow control.
Media flexibility — The trays allow you to use mechanical, biological, chemical media (e.g. sponges, activated carbon, bio rings) as per your setup.
UV on/off / safety switch — In some models the UV lamp is wired so that if the canister is disassembled, the UV cuts out.
👍 Pros & Advantages
Good flow & capacity for its priceThe HW‑304B in particular offers a high flow rate (2,000 L/h) which is attractive for larger or heavily stocked tanks.Integrated UV sterilizerHaving a 9 W UV lamp built in helps in controlling algae, parasites, and bacterial blooms, which can improve water clarity.
** decent head / lift in higher model**The HW‑304B’s ~2.5 m lift gives more flexibility where the canister is placed below the aquarium.
Multiple media traysMore trays / stages allow you to optimize mechanical, chemical, and biological filtration separately.
Self‑priming & adjustable returnThese ease setup and reduce fuss during installation or restart.
👎 Cons, Limitations & Common Problems
From user reports and community feedback:
Leaks / O‑ring / seal issuesSome users report leaks or the need to re‑lubricate O‑rings and connectors, especially after opening and cleaning.
Lid / clamp stressThe clamps / buckles that secure the lid can wear or break, especially if you grip them hard to open. Some users say the lid can “stick” strongly due to vacuum / suction.
UV plastic degradation / warpingProlonged exposure to the UV lamp has been mentioned by users as causing plastic parts (trays) to yellow or warp after extended usage. One user suggests not running UV continuously.
Overheating / auto turn offSome users claim their HW‑304B would shut off after running a while (possibly thermal protection or fault).
Air lock / priming issuesAs with many canister filters, air bubbles can block flow until properly bled or primed. Some report weak flow until all air is removed.
Noise / vibrationIn some setups, users report noise from water turbulence, suction, or vibration—especially if hoses are not well supported or the impeller is slightly off.
🔍 Real‑world Feedback & Tips
Here are some community observations + tips:
“I’ve had the SunSun 304B for about 3 months … I had read that they leak, so I took time to lube the O‑ring … Haven’t had a drop of water lost.”
“The flow is quite strong … aiming the spraybar helped a ton.”
“When the spray bar is cheap / clogged, the flow seems weak … cleaning it improved the flow.
“Lid gets stuck due to suction / vacuum. Disconnect hoses first; O‑ring resistance is expected.”
“UV warps trays over time; I run UV intermittently, not 24/7.”
“The temperature / heat on top becomes warm. UV has been replaced twice in lifetime of filter.”
🧮 Suitability & How It Compares
The HW‑303B is suitable for medium tanks (below perhaps ~250–300 L in real use) given its 1,400 L/h rating, though actual effective flow will be lower once tubing, media, bends, and lift are considered.
The HW‑304B offers higher capacity, making it better for larger setups or tanks with heavier bioload.
The inclusion of UV is a differentiator vs many basic canister filters.
In comparison to the Dophin filters you asked about earlier (CF12008, CF12308, CF12508), the SunSun units may offer better flow and head in their higher models, but potentially more complexity (UV, more mechanical wear points) and more to maintain.
✅ Summary: Is It a Good Option?
The SunSun HW‑303B / HW‑304B filters with built‑in UV are solid mid‑range canister filters offering good performance and built-in sterilization. If you're comfortable with maintenance (especially ensuring seals are good, managing air, cleaning UV parts) they can be a cost-effective option.
In-Out Tap Assembly HW-304B
Product Description
The In-Out Tap Assembly for the Sun Sun HW-304B canister filter allows you to control water flow easily and disconnect the hoses without leaking. This replacement tap set fits directly onto the HW-304B intake and outlet pipes and restores smooth operation if your original taps become stiff, cracked, or start leaking. Designed for a secure fit and reliable performance.
Key Features
Replacement tap assembly for Sun Sun HW-304B canister filter
Controls water flow on both inlet and outlet lines
Makes filter maintenance easier and cleaner
Helps prevent leaks caused by worn or damaged tap units
Simple to install and remove
Usage Instructions
Turn off your filter and close both taps.
Disconnect the old tap assembly from the canister and hoses.
Attach the new tap assembly firmly to the hoses and filter head.
Open both taps slowly to restore water flow.
Check for any leaks around fittings.
Specifications
Compatibility: Sun Sun HW-304B
Components: complete in-out tap assembly (inlet and outlet)
Material: durable plastic with rubber seals
Why Replace This Part
A worn tap assembly can cause dripping, reduced flow, or difficulty during maintenance. Replacing it restores full control of your filter’s water flow and reduces the risk of leaks.
Sun Sun HW-304B Filter Wool
Product Description
The Sun Sun HW-304B Filter Wool is designed to provide effective mechanical filtration for the HW-304B canister filter. It traps fine particles, fish waste, and leftover food before they reach your biological media, helping maintain clear and healthy aquarium water. This filter wool fits perfectly in the HW-304B trays and is easy to install and replace.
Key Features
Compatible with the Sun Sun HW-304B canister filter
Traps debris and fine particles for cleaner water
Helps protect biological media by removing waste early in the filtration process
Reusable after rinsing
Simple to install and maintain
Usage Instructions
Rinse the filter wool thoroughly in tap water before first use.
Place the wool in the designated tray of the HW-304B filter.
Clean or replace every 2–4 weeks depending on tank load and water clarity.
Do not use soap or detergents when cleaning.
Specifications
Material: Synthetic filter fiber
Colour: White
Fits: Sun Sun HW-304B canister filter
Care: Rinse under running water only
Why Use This Filter Wool
This filter wool improves water clarity by capturing debris before it circulates through the system. It increases overall filtration efficiency and helps maintain a stable, healthy environment for fish and plants.
Sun Sun HW-303-B Filter Wool
Product Description
Keep your aquarium water clean and clear with the Sun Sun HW-303-B Filter Wool. Designed for the HW-303-B canister filter, this high-quality wool provides efficient mechanical filtration, trapping debris, fish waste, and leftover food. It helps maintain a healthy environment for your fish and plants.
Key Features
Compatible with Sun Sun HW-303-B canister filter
Traps debris and fine particles for clearer water
Supports biological filtration by providing surface area for beneficial bacteria
Reusable after rinsing
Easy to install and replace
Usage Instructions
Rinse the filter wool thoroughly in tap water before first use.
Place the wool into the designated tray of the filter.
Clean or replace every 2–4 weeks depending on tank size and water conditions.
After cleaning, rinse again and reinsert into the filter.
Specifications
Material: High-quality synthetic fiber
Color: White
Fits: Sun Sun HW-303-B canister filter
Care: Rinse only — do not use soap or detergents
Why Use This Filter Wool
The Sun Sun HW-303-B Filter Wool efficiently removes debris before it reaches the biological media, improving water circulation and filter efficiency. It helps maintain clear, healthy water for a thriving aquarium.
SUN SUN Manure Filter JFP-01 – 350 L/H
The SUN SUN Manure Filter JFP-01 (350 L/H) is a compact and efficient aquarium filtration accessory designed to help trap solid waste and debris before it enters your main filter system. With a flow rate of 350 L/H, it’s ideal for small to medium aquariums or sump setups where additional mechanical filtration is needed.
Key Features
Flow Rate: 350 L per hour for consistent water movement
Mechanical Filtration: Captures solid waste and debris to improve water clarity
Pre-Filter Protection: Reduces clogging and extends the life of main filters
Compact Design: Easy to install and fits neatly in sumps or aquarium setups
Durable Construction: Long-lasting and reliable performance
Aquarium-Safe Materials: Safe for use in both freshwater and marine systems
Ideal For
Pre-filtration before canister, hang-on or sump filters
Freshwater and marine aquariums
Reducing detritus and improving overall water quality
Small to medium aquarium systems
Maintenance Tips
Rinse the manure filter regularly with aquarium water to prevent buildup and maintain optimal flow and performance.
Intake Outlet Accessories HW-304B
Product Description
The Intake Outlet Accessories set for the Sun Sun HW-304B canister filter includes the essential hard pipe parts used for water intake and water return. These components help maintain proper water flow and circulation, ensuring your filter runs smoothly and efficiently. This set is ideal for replacing cracked, worn, or missing pieces on your HW-304B system.
Key Features
Replacement intake and outlet parts for Sun Sun HW-304B
Restores correct water flow and circulation
Fits directly onto HW-304B hose connections
Durable hard plastic design
Simple to install and assemble
Usage Instructions
Turn off the filter before removing old parts.
Disconnect damaged intake or outlet pieces from the hoses.
Attach the new parts securely to the hoses and position them correctly in the tank.
Confirm all fittings are tight before restarting the filter.
Check for smooth water flow once running.
Specifications
Compatibility: Sun Sun HW-304B
Components: intake pipe parts and outlet pipe parts (varies by set)
Material: durable plastic
Why Replace These Parts
Replacing damaged or clogged intake and outlet parts helps restore stable water movement, improves filtration performance, and keeps your aquarium water clean and well circulated.
Intake/Outlet Accessories HW-303B
Product Description
The Intake/Outlet Accessories set for the Sun Sun HW-303B canister filter includes the essential hard pipe parts needed for water intake and return. These components help maintain proper water flow, stable filtration, and efficient circulation in your aquarium. This set is ideal for replacing cracked, missing, or worn pieces on your HW-303B filter, ensuring it continues to operate smoothly.
Key Features
Replacement intake and outlet parts for Sun Sun HW-303B
Restores proper water flow and circulation
Fits directly onto the HW-303B canister and hose connections
Durable hard plastic design
Easy to assemble and install
Usage Instructions
Turn off the canister filter before removing old parts.
Detach the damaged or worn intake/outlet pieces from the hoses.
Attach the new accessories securely to the hoses and position them in the tank.
Ensure all connections are tight before restarting the filter.
Check for smooth water flow once running.
Specifications
Compatibility: Sun Sun HW-303B
Components: intake pipe parts, outlet pipe parts (varies by set)
Material: durable plastic
Why Replace These Parts
Over time, intake and outlet components can crack, clog, or lose suction. Replacing them helps restore smooth water movement, improves filtration efficiency, and keeps your aquarium water clean and well circulated.
In-Out Tap Assembly HW-303B
Product Description
The In-Out Tap Assembly for the Sun Sun HW-303B canister filter allows you to control water flow and disconnect the hoses safely during maintenance. If your original taps become stiff, cracked, or begin to leak, this replacement set restores smooth operation and a secure seal. It is designed to fit directly onto the HW-303B intake and outlet lines for reliable performance.
Key Features
Replacement tap assembly for Sun Sun HW-303B canister filter
Controls water flow on both inlet and outlet hoses
Makes filter cleaning and maintenance easier
Helps prevent leaks caused by worn tap units
Easy to install and remove
Usage Instructions
Switch off the filter and close both taps.
Disconnect the old tap assembly from the hoses and canister.
Attach the new tap assembly securely to the intake and outlet pipes.
Open both taps slowly to restore water flow.
Check all fittings for leaks.
Specifications
Compatibility: Sun Sun HW-303B
Components: complete in-out tap assembly
Material: durable plastic with rubber sealing parts
Why Replace This Part
Replacing a worn or leaking tap assembly helps maintain stable water flow, prevents drips, and makes routine maintenance quicker and cleaner.
O-Ring Canister HW-304B
Product Description
The O-Ring for the Sun Sun HW-304B canister filter provides a secure, watertight seal between the canister body and the filter head. Over time, O-Rings can wear out, flatten, or crack, causing leaks or reduced filter performance. Replacing the O-Ring restores a proper seal and helps your filter run smoothly and reliably. This O-Ring is made specifically for the HW-304B model for an accurate fit.
Key Features
Replacement O-Ring for Sun Sun HW-304B canister filter
Maintains a watertight seal to prevent leaks
Helps keep filter pressure and flow consistent
Made from durable rubber material
Easy to install and replace
Usage Instructions
Remove the old O-Ring from the filter head.
Clean the O-Ring groove to remove debris or old residue.
Apply a small amount of safe silicone lubricant if needed.
Fit the new O-Ring into the groove and ensure it sits evenly.
Reassemble the canister filter and check for leaks.
Specifications
Material: high-quality rubber
Colour: black
Fit: Sun Sun HW-304B canister filter
Why Replace This O-Ring
A fresh O-Ring ensures a strong seal, prevents water leaks, protects your equipment, and keeps your canister filter performing at its best.
O-Ring Canister HW-303B
Product Description
The O-Ring for the Sun Sun HW-303B canister filter creates a secure, watertight seal between the filter head and the canister body. A worn or damaged O-Ring can cause leaks or reduced filter performance, so replacing it ensures your filter continues to run smoothly and efficiently. This O-Ring is designed specifically for the HW-303B model for a reliable fit.
Key Features
Replacement O-Ring for Sun Sun HW-303B canister filter
Restores a proper watertight seal
Helps prevent leaks and maintain filter pressure
Durable material for long service life
Easy to install
Usage Instructions
Remove the old O-Ring from the filter head.
Clean the groove to remove debris or old lubricant.
Lightly apply safe silicone lubricant if needed.
Fit the new O-Ring into the groove and ensure it sits evenly.
Reassemble the filter and check for leaks.
Specifications
Material: high-quality rubber
Colour: black
Fit: Sun Sun HW-303B canister filter
Why Replace the O-Ring
Replacing a stretched, cracked, or flattened O-Ring prevents leaks, protects your equipment, and ensures your canister filter maintains proper flow and pressure for effective aquarium filtration.
Digital Thermometer – WDJ-004
The WDJ-004 Digital Thermometer is a precise and easy-to-read temperature monitoring solution for your aquarium. Designed for freshwater, tropical, and marine tanks, it provides instant and accurate readings, helping you maintain a stable environment for your fish, plants, and aquatic life.
With its compact design and clear LCD display, the WDJ-004 allows hobbyists to check water temperature at a glance. Its reliability and accuracy make it an essential accessory for every aquarium setup.
Key Features
Digital LCD display for easy and fast temperature readings
High accuracy for freshwater, tropical, and marine aquariums
Compact and lightweight design for convenient placement
Battery-powered for hassle-free operation
Ensures optimal water temperature for healthy aquatic life
Specifications
Model: WDJ-004
Type: Digital thermometer
Temperature Range: 0°C – 50°C
Power: Battery-operated
Use: Freshwater, tropical, and marine aquariums
Why Choose Aquatic Pets SA
At Aquatic Pets SA, we provide high-quality, reliable aquarium equipment to help your aquatic life thrive. The Digital Thermometer – WDJ-004 ensures accurate monitoring and peace of mind, making it a must-have tool for every aquarist.
Sun Sun Imported Aquarium (HNE series)
Key Details & Features
The “HNE” in the model name indicates part of the nano/desktop series (e.g., HNE‑300, HNE‑380) for smaller aquarium setups.
One listing shows the HNE‑300 model: size approx 30 × 20 × 33 cm, capacity about 19 L (white version).
There appears to be an instruction manual referencing the “HNE/HR‐Serie Nano Aquarium”.
Typical features include ultra‐white glass, integrated lighting (in some models), small filtration system. For example: the seller listing above mentions “built‐in filter JP‑230G 2.5W” and “3 W LED lighting module” for the HNE‑300.
👍 What’s Good About It
Compact size: good for smaller spaces like desks, bedrooms, or apartments — the nano size is convenient.
All‑in‑one style: It seems to include the tank + light + filter in some versions, simplifying setup.
Ultra‑white glass: for clearer visuals and a more premium look.
Recognised brand: SunSun is known in the aquarium hobby, so parts/spares and support may be easier than unknown brands.
👎 Things to Be Aware Of / Limitations
Size is small: At ~19L for HNE‑300, you’re limited in how many fish or what size you can keep. Larger fish need much more space.
Integrated systems may limit upgrades: If it comes with built‑in filter or light, you might have less flexibility to swap components vs. a modular tank.
Nano tanks require more frequent maintenance: Because of smaller water volume, parameters (temperature, ammonia, nitrites) can fluctuate more quickly.
Check exact specs: The manual shows “HNE/HR Serie Nano Aquarium” but not full specs for HNE models in a single source.
📝 Setup & Usage Tips
Ensure the tank is placed on a level and very stable surface — small tanks wobble less but still need care.
If the model has built‑in filter or pump: ensure water level is correct so the pump works properly (many integrated systems require a minimum fill height).
Cycle the tank before adding fish: even nano tanks need beneficial bacteria to build up.
Monitor parameters (ammonia, nitrite, nitrate) more frequently than large tanks because changes happen faster in small volumes.
For lighting and plant use: If you plan plants, ensure the built‑in lighting is enough; many nano tanks come with basic lighting—plants may need upgrade.
Upgrade cautiously: If you later want to add more fish or larger fish, you’ll likely need to move to a bigger tank rather than try to squeeze them into a nano.