Water changes..
Ordinarily with an elevated alkalinity I'd say just dose Ca for a while and it will come down anyhow (well, maybe with 22, I'd still say water changes, that's a high reading!!). But since you don't have any livestock, you don't have anything that's consuming that Alk and Ca, so in this case, just go with the water changes.
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-- Tony
My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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