
Most of these chemicals neutralize chlorine in tap water. It also neutralizes nitrates, nitrites and ammonia. Neutralized ammonia does not harm the fish, but can still be used by bacteria in the aquarium. About the best you can do. I don't use anything anymore. Cheaper brands won't do any of this.

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

EcoBio-Block Stone: Natural Water Clarifier & Odor Remover for Aquariums (Medium) - Treats 15-40 Gallons Efficiently
10 Review

π Two Little Fishies Marine Snow ATLMSPD4, 16.9 oz
10 Review

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

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

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

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