help with PH

[racingfiend]

what should my PH be at? I have a 55 gallon freshwater tank that I have had for 3 years, just started it up no problem. Now , suddenly my fish are dying one by one. My water clouded up today. What's happening? PH is
7.4 :sad:

 

[sumthin fishy]

7.4 is a good figure, cole to neutral. Depending on what you have, they might like it higher or lower, but if it stable at 7.4 youshould have no rpoblems. See the other thread you posted of simmilar nature for better answers..