
I have a 125 gallon cichlid only tank. I do a 40 liter water change once a week. I only need to add 4 teaspoons to keep the pH at 7.8. This large bottle lasts a long time even though the price has doubled since my original purchase.

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

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

Omega-3 caps, 1000 mg, 100 pcs, 1 pack, neutral
34 Review

Tetra AquaSafe tap water treatment agent, 5 l
11 Review

Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 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

π§² Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review