Most species of gars aren't too finicky about pH, and should do fine as long as the pH isn't too extreme towards either end of the pH spectrum. The important thing to remember is that there shouldn't be any sudden or quick swings in pH. This is especially so with cuban gars. With cubans I've also found them to do better in higher pH values. I keep mine (along with floridas, longnose and gator) at between 7.5 and 7.7
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