what is the best way to raise pH?
I tried a few solutions and found that a large cuttlefish bone from the bird section works pretty well and it does it slowly enough over a couple of days to be safe. They float and I put one from a pack of 2 in my 30 gallon tank. The pH went from 6.0 to 7.0 in a week and seem to be holding. Make sure it's just plain cuttlefish bone. Sometimes they are flavored for birds.
Well I went from 6.8 to 7.8 quickly when I added cuttlebone and almond leaves.
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