
We did a water analysis before installing the filter. 3 indicators exceeded the norm, but most of all nitrates and they can only be reduced by reverse osmosis. This filter was bought on the advice of a colleague (she has the same one). The water analysis was repeated after installation, here are the numbers: hardness was 9 (normal up to 7) became 2. Calcium was 124 mg / l (it is not standardized) became 12. Nitrates from 162 mg / l (normal up to 45 mg) decreased to 64 mg. The kettle looks like new, no scale at all. I recommend the filter!

KEDSUM 330GPH Ultra Quiet Submersible Pump With High Lift And Grounded Power Cord - Ideal For Fish Tanks, Ponds, Aquariums, Statuary, Hydroponics - Includes 3 Nozzles And 1500L/H Water Flow
39 Review

KEDSUM Quiet Rechargeable Battery-Operated Aquarium Air Pump With Dual Outlets - Perfect For Fish Tank, Outdoor Fishing, Transport, And Emergencies
28 Review

Powerful And Quiet Submersible Pump For Aquarium, Pond, And Hydroponics: KEDSUM 660GPH Pump With 6Ft High Lift And 3 Nozzles
29 Review

Revitalize Your Freshwater Fish Tank With Greenpro Microsorum Pteropus Java Fern - Full Potted Live Aquarium Plants
22 Review

Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 Review

🐠 U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review

Greenpro Micranthemum Monte Carlo: Live Large Pearl Grass Aquatic Plant In Tissue Culture Cup For Freshwater Fish Tanks And Aquariums
49 Review

Steam cleaner Deerma Deerma DEM-ZQ610 EU, white/red
68 Review