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Re: High K levels
Several discussions suggest you must add KNO3 (or other source of K) to the
tank. I considered buying some - but decided to test the tank waters first,
with a turbidity test. These tanks have been recently cleaned, replanted,
but are still growing some algae.
General info - mountain spring well water - KH, GH were off scale. The tap
water is pH 8.4 after it off gasses. The yeast/sugar CO2 systems bring the
tank water down to ~ 7.5. After doing the test, below, I figure my hard
water isn't all Calcium carbonate.
Tank 1 - NO3 - about zero, certainly below 12.5 mg/l. PO4 maybe 0.05 ???-
directions say 0.02 but don't say what is not good. K - way in excess of the
two turbidity standards in the kit. Tank 2 about the same except the PO4
might be as much as 0.1 mg.
The K instructions say if the K is too high to a partial water change. K
test on tap water is as high as tanks.
Is this a problem? If so, what is the problem? It would appear that I'm a
bit shy of NO3. More fish or feed will just raise the PO4, which could be a
little high, but its hard to tell. KNO3 isn't the answer. And I'm probably
changing my tank water too much too often anyhow, going at 50% a week, trying
to reduce algae. I could use some advice from someone else with hard well
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