Heh, I'll never have a FW tank without a sump again. Once you go sump...
Tony you're in the South aren't you? The water coming out of the Glenmore res is always pretty hard, my FW tanks ran above 8 most of the time. I'm actually surprised your tap water is testing that low, could be CO2 in the water that out gasses after it's been sitting a bit. Fill up a glass and leave it overnight, see if the pH rises.
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