
Follow the instructions; I used this tablet weekly for 4 weeks and then once a month in a 350 gallon aquarium with giant koi, shubunkin and very large goldfish. In the first week the water was cleaned. Missed the second week and he started slipping back. Started fresh, done 4 weeks and now monthly --- crystal clear water! I always did weekly water changes. Highly recommended.

Live Freshwater Aquarium Plants: Dwarf Baby Tears, Hemianthus Callitrichoides, Java Moss In Vitro TC Cup By Greenpro
31 Review

ACCU-CLEAR Water Clarifier for Freshwater Aquariums - Quickly Clears Cloudy Water, Ideal for Weekly Use
9 Review

Tetra AquaSafe tap water treatment agent, 5 l
11 Review

π API Stress Coat Water Conditioner | Tap Water Safe, Repairs Fish's Protective Coat, Use for Water Changes, Adding Fish, and Injuries
9 Review

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

Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review

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

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