Crushed coral for PH

[Danno]

when raising PH, is there a set ammount of crushed coral to use per gallon?

 

[Armand]

Crushed coral help PH to become more alcaline, however i dont know about a rule of how much of it per gallon, I just placed a couple of pounds in my 85 gal tank and that's it, you dont want that much of it either.