Maintain crystal-clear water and a healthy pond ecosystem with the CPF Pond Bio Filter, designed for efficient mechanical and biological filtration. Perfect for koi ponds, garden ponds, and commercial pond systems, this high-quality bio filter ensures that water remains clean, oxygenated, and free from harmful toxins.
Available in multiple sizes – 2500, 5000, 10000, 15000, and 30000 – the CPF Pond Bio Filter provides flexibility to suit ponds of various volumes, from small garden setups to large-scale pond systems. Each unit is engineered to support beneficial bacteria growth, which naturally processes ammonia and nitrites, maintaining a balanced aquatic environment.
Features:
Available in 5 sizes: 2500, 5000, 10000, 15000, and 30000
Provides mechanical and biological filtration for ponds
Supports growth of beneficial bacteria to control ammonia and nitrite levels
Promotes clear, healthy, and oxygen-rich water
Durable construction suitable for long-term pond use
Easy to install and maintain
Benefits:
Optimal Water Quality: Reduces debris, toxins, and harmful chemicals for a cleaner pond.
Healthy Fish & Plants: Maintains balanced water parameters for koi, goldfish, and pond plants.
Scalable for Any Pond: Multiple sizes allow selection according to pond volume and stocking density.
Long-Lasting & Reliable: Built to withstand outdoor conditions while providing continuous filtration.
Why choose the CPF Pond Bio Filter?With over 15 years of experience, Aquatic Pets SA supplies trusted filtration solutions for hobbyists and professional pond keepers alike. The CPF Pond Bio Filter series ensures reliable, efficient, and sustainable pond filtration, keeping your pond water clear, healthy, and vibrant.
Grech Internal Filter – CF-700S, CF-900S, CF-1200S & CF-1500S
The Grech Internal Filter range (CF-700S, CF-900S, CF-1200S & CF-1500S) offers a versatile and reliable filtration solution for a wide variety of aquarium setups. Designed for efficient, quiet operation and easy installation, these internal filters provide excellent mechanical and biological filtration in a compact design.
Available Models
Grech CF-700S
Grech CF-900S
Grech CF-1200S
Grech CF-1500S
Key Features
Multi-stage mechanical and biological filtration
Adjustable water flow to suit different tank sizes and fish
Compact internal design with strong suction cups for secure mounting
Quiet and energy-efficient motor
Easy to maintain and clean
Suitable for freshwater and marine aquariums
Ideal For
Community aquariums
Planted tanks
Tropical and marine setups
Small to large aquariums depending on model size
Note: This is a variable product. Please select the correct model (CF-700S, CF-900S, CF-1200S or CF-1500S) based on your aquarium size and required flow rate.
GRECH PUMP CQB-6000 - 5800 L/H
The CQB-6000 is part of the “CQB series” multi-purpose submersible pumps from GRECH.
It is rated to deliver up to ~ 5,800 litres per hour (L/h) flow.
It also has a maximum “head” (vertical lift) of around 4.0 metres. This determines how high the pump can raise water while still providing that flow.
The unit is typically designed for submersible use — meaning it runs underwater.
The pump housing is often made from durable ABS-plastic, and it features a wear-resistant ceramic shaft / impeller (or similar) — which helps with longevity and resistance to wear.It’s described as usable in both freshwater and saltwater environments, which makes it versatile (ponds, aquariums, fountains, water features, hydroponics, etc.) depending on how you set it up.
Typical Uses
Because of its flow rate and submersible design, the CQB-6000 is commonly used for:
Ponds, water gardens, or water features/fountains — its high flow and head make it suitable to circulate or lift water even if there’s some vertical height or distance involved.
Aquariums or large freshwater/saltwater tanks — especially where significant water circulation or pumping is required, e.g. return pumps, filtration systems, sump-to-tank setups.
Hydroponic or aquaponic systems — where water needs to be circulated or recirculated through growing media or systems. Indeed, GRECH markets their “multi-purpose submersible pumps” for this kind of use.
Fountains or decorative water flows — if you want a strong, reliable flow for a waterfall, cascade, or water feature.
Strengths
High flow and decent head — so it can handle medium-to-large ponds or tanks, or systems with some vertical lift.
Durable build, thanks to wear-resistant parts and robust housing — which helps for long-term use.
Versatility: compatible with fresh and salt water; suitable for multiple applications (pond, aquarium, hydroponics, fountains).
Submersible: easier installation since the pump goes in water, and no need for complex external plumbing.
What to Watch / Consider
Because it’s high-flow, you’ll need plumbing (hoses/pipes) that can handle the volume — too small pipes will reduce efficiency or overload the pump.
If using for aquariums or living systems (fish, plants), ensure that the flow rate and water movement is appropriate for the inhabitants — too strong a flow might stress fish or disturb substrate.
Regular maintenance may still be needed — especially cleaning the inlet/prefilter and ensuring no debris clogs the impeller (many pumps allow particulate up to a certain size, but performance degrades if clogged). The “open-type centrifugal impeller” design (found in some similar pumps) allows dirt up to some size — good for ponds/fountains, but maybe less ideal for delicate aquarium setups.
Ensure the power and electrical supply matches — submersible pumps must be properly insulated and grounded, especially if used in a saltwater environment or outdoors.
Is it a Good Fit — when you want this
The GRECH CQB-6000 is a good choice if you need a strong, reliable, submersible pump for ponds, large tanks, hydroponic systems, or fountains. It’s more than sufficient for medium-large setups, and robust enough for continuous use, provided you handle plumbing properly and maintain it. On the other hand, for very small aquariums or very delicate setups (e.g. gentle flow for certain fish/plants), it might be “too powerful.”
he CQB-6000 is part of the “CQB series” multi-purpose submersible pumps from GRECH.
It is rated to deliver up to ~ 5,800 litres per hour (L/h) flow.
It also has a maximum “head” (vertical lift) of around 4.0 metres. This determines how high the pump can raise water while still providing that flow.
The unit is typically designed for submersible use — meaning it runs underwater.
The pump housing is often made from durable ABS-plastic, and it features a wear-resistant ceramic shaft / impeller (or similar) — which helps with longevity and resistance to wear.
It’s described as usable in both freshwater and saltwater environments, which makes it versatile (ponds, aquariums, fountains, water features, hydroponics, etc.) depending on how you set it up.
Typical Uses
Because of its flow rate and submersible design, the CQB-6000 is commonly used for:
Ponds, water gardens, or water features/fountains — its high flow and head make it suitable to circulate or lift water even if there’s some vertical height or distance involved.
Aquariums or large freshwater/saltwater tanks — especially where significant water circulation or pumping is required, e.g. return pumps, filtration systems, sump-to-tank setups.
Hydroponic or aquaponic systems — where water needs to be circulated or recirculated through growing media or systems. Indeed, GRECH markets their “multi-purpose submersible pumps” for this kind of use.
Fountains or decorative water flows — if you want a strong, reliable flow for a waterfall, cascade, or water feature.
Strengths
High flow and decent head — so it can handle medium-to-large ponds or tanks, or systems with some vertical lift.
Durable build, thanks to wear-resistant parts and robust housing — which helps for long-term use.
Versatility: compatible with fresh and salt water; suitable for multiple applications (pond, aquarium, hydroponics, fountains).
Submersible: easier installation since the pump goes in water, and no need for complex external plumbing.
What to Watch / Consider
Because it’s high-flow, you’ll need plumbing (hoses/pipes) that can handle the volume — too small pipes will reduce efficiency or overload the pump.
If using for aquariums or living systems (fish, plants), ensure that the flow rate and water movement is appropriate for the inhabitants — too strong a flow might stress fish or disturb substrate.
Regular maintenance may still be needed — especially cleaning the inlet/prefilter and ensuring no debris clogs the impeller (many pumps allow particulate up to a certain size, but performance degrades if clogged). The “open-type centrifugal impeller” design (found in some similar pumps) allows dirt up to some size — good for ponds/fountains, but maybe less ideal for delicate aquarium setups.
Ensure the power and electrical supply matches — submersible pumps must be properly insulated and grounded, especially if used in a saltwater environment or outdoors.
Is it a Good Fit — when you want this
The GRECH CQB-6000 is a good choice if you need a strong, reliable, submersible pump for ponds, large tanks, hydroponic systems, or fountains. It’s more than sufficient for medium-large setups, and robust enough for continuous use, provided you handle plumbing properly and maintain it. On the other hand, for very small aquariums or very delicate setups (e.g. gentle flow for certain fish/plants), it might be “too powerful.”
