KH and PH after crushed coral

[cdbaby123]

I added crushed coral to my tank to bring my KH up, as it was at basically O according to my test strips. And to raise my PH which was at a 6 according to the API MTK. Now my KH is about mid level 80 according to test strips and 5 drops according to API kit.

My PH is at a 7.6 which I believe is too high for my tetras and betta, and I would like to add cory cats which all require about a 7.

How do I lower the PH without upsetting the KH?

And just as a side question how often do I need to change out the crushed coral.

 

[SassyHippo]

I would like to know all this as well. I actually have a high PH and I’ve added the Indian almond leaves and am waiting. I’ve read and heard that it’s more important to have a stable PH than it being just perfect.
At the same time I have a water treatment system so my water is quite soft. Right now I just have a Betta but I want guppies and I’m trying to figure all the same things out before getting them

 

[Delapool]

This might help:


http://www.theaquariumwiki.com/wiki/KH

I believe it’s possible but generally ph and kh go hand in hand.

I’ve heard of people running CO2 to lower ph for discus but ime when CO2 injection is stopped - ph returns back to starting point.

 

[cdbaby123]

My KH is in a good area. It is my PH I am concerned about....

 

[fishwonder]

You pH is fine. Fish will get used to it. Crushed coral last forever. You only need 1 tablespoon to support 200 gallons of water.