what can Limestone affect the water perimeter

[jade]

have anyone use limestone as a set-up for their African cichlids.will it helps to buffer the ph?

[Mez]

Hello.
Yes, Limestone buffers the pH and the hardness of the water. I use crushed coral and sand as a substrate for my tanganyikans, so the pH and hardness is increased that way.
James

[jade]

so that means those limestone for garden landscaping can be use in our tank.