hello there as some of you may know i changed my south american cichlid tank to an african cichlid tank. i don't have that much experience with them. i have a nice rock wall for them and they are swiming with no problems. i went to pet land discounts and asked them to test my water when they finaly did my ph was 7.4 and i know that it is too low for them. i asked how i can rais it and the worker told me to use crushed coral. does this realy work im not going to buy something that will shock my fish and kill them. i was told to put it in litttle by little so they dont get shocked. ive had 7 juveniles and 2 died now i have only 5 but its not a complete loss i still have 8 bigger ones about 2 times their size. if any one can tell me by how much the ph will rise if i use crushed coral. thank you all in advanced i realy apreciate your help.:y220e: