Mbuna tank sudden pH drop

[Colin_T]

For those with limestone, coral or aragonite in their tanks and have low pH, very soft tap water, how do you handle water changes? I'm assuming a 1/3 to 1/2 of the tank water change would take a while for the water to come up to the desired pH.

I made the water up before using it. I either used a spare tank or some large plastic rubbish bins (used for the fish only) and filled it with tap water, then add Rift Lake water conditioner (mineral salts), and aerated it for a week. Then I used that water for water changes. The pH, GH & KH were the same for every water change.

 

[gilpi]

I made the water up before using it. I either used a spare tank or some large plastic rubbish bins (used for the fish only) and filled it with tap water, then add Rift Lake water conditioner (mineral salts), and aerated it for a week. Then I used that water for water changes. The pH, GH & KH were the same for every water change.

... and your fish won't be exposed to sudden pH swings. Thank you.