Reduces alkalinity and increases acidity in aquarium water

Directions:
As a general rule, 1 tablespoon of powder per 100 litres of tankw ater, dissolving firstly in a small cup of aquarium water, then adding to a flowing area of the aquarium.
Add a sufficient quantity of pH DOWN to aquarium water to achieve a neutral or desired reading. Accurate pH levels can be obtained by testing the aquarium water with an Blue Planet pH Test Kit after the addition of pH UP until desired reading is achieved. Check the change of pH value 1 hour after application of pH Up. Repeat the process up to 3 times per day, testing in between.

IMPORTANT: To avoid unduly stressing fish all pH changes should be made gradually - small changes (less than 0.5 units) over a few days. Large changes over a week.