Use these three seachem products to fine tune the water parameters of your aquarium. Use Equilibrium to reach your desired GH, Alkaline Buffer to raise KH and pH, and Acid Buffer to convert alkalinity to CO2, lowering the pH.

I tried them in one of my tanks, but ultimately decided to just mix tap and RO water, and hardly used a

ny of it. They are the 300g bottles, and are very nearly still full. Below are the current weights of each bottle, including the plastic bottle itself: 

Equilibrium: 291g

Acid Buffer: 308g

Alkaline Buffer: 329g

Product info from Amazon: 

• Equilibrium is designed to optimize mineral content for planted aquariums, adding a slight haze that clears within 15–30 minutes. For a 1 meq/L (3 dH) increase in general hardness, add 16g (1 tbsp) per 80L (20 US gallons) of new water; it dissolves gradually over 12 hours.
• Alkaline buffer raises pH and alkalinity (KH) safely, ideal for planted aquariums or hard water to prevent cloudiness; 300g treats up to 500 gallons.
• Acid Buffer lowers pH and converts alkalinity into CO2, supporting optimal aquarium conditions.