04-29-2007, 04:53 PM
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Originally Posted by MattD
Thing is, your standard source of water (your tap, I assume), set your pH at 8.0 - 8.2 by default since that is the pH of your source. This means that, whatever you do to lower it now, you will have to do every week, with EVERY water change. Your fish will need to endure this pH fluctuation often (depending on how often you change your water), which is not good for them.
Lowering/increasing Ph can be done but it requires a lot of very careful monitoring. You can reduce fluctuations by monitoring very carefully and always adding whateer you're adding whenever it increases again, but fluctuations will still happen and that's very bad for fish. Generally the best idea is to find fish that like the water parameters as they are, as I found out the hard way when I lost a molly due to my water being far too soft for her.
The only way you could stop this is by using bottled water but like Kate said you'd have to test loads of different brands to find out their Ph value. I don't know but I'm not sure all bottles of Evian for example would be exactly the same either. There are added vitamins and minerals in bottles water - you'd have to check out how they would affect your fish as well. I remember a post here one time advising against bottles water for tanks because of the added vitamins and minerals being bad for the fish.