ph

[shaneZoid]

I have a 125 and i am in constant battle to keep the ph at 7. I have 2 oscars and a Pacu and i need some sure safe ways to raise and keep the ph at 7. My ph usually stays around 6 and i am on well water. Any suggestions will be greatly appreciated.

[NatakuTseng]

I wouldn't even worry about doing anything with your pH, 6 is perfectly fine for oscars and pacu. Both species live in south america and naturally live in acidic water. They would be perfectly fine with the well water. I wish I had water like that, lol.

[OrionGirl]

I agree--your pH is right inline for you fish, as long as it is stable at that level. Check that your kH is around 3--if so, don't worry. If not, you may want to raise it a bit. A small nylon baggie with some crushed coral will help out, and may raise your pH a tad--but still nothing to worry about.

[RTR]

What are the nitrate titers usually in the tank?

What is your tap water pH?

While I agree that a pH of 6-ish is fine for the fish involved, if you tap water is pH >7.0, you are suffering high-bioload depression of the pH and need to increase the frequency and/or percentage of the water partials.

[Leopardess]

You may find something of interest in this thread:

http://www.aquariacentral.com/forums/showthread.php?s=&threadid=21082