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03-31-2011, 09:06 AM
13dkh is very high. Natural seawater is 6.5-7dkh.
Jamie, Are you using tap water or RO? If you are using tap that is why it is high. If you are using RO then what kind of salt are you using? Are you dosing 2 part? Depending on the salt you are using water changes may not lower your alk. If you are not dosing then the excess carbonate will be consumed by coraline and corals. In your young tank this may take a while. I would also suggest a quality test kit. Lamotte is the only kit on the market that I would trust with my coral collection.
Originally Posted by Heidi
Jamie, (correct me if I'm wrong people) But 13 isn't really that high for dkh. When I mix new water with reef crystals I think it is right around there. But if you are concerned about it I am pretty sure the only way to lower KH is to do a crap load of water changes. I would just watch it maybe get a new test kit too. But really, I don't think 13dkh is high. When your ca. is 460 and you ph is 8.2 11 or even 13 dkh is ok.
Hope you get it figured out,
Oh. . . 1 more thing, are you dosing Cal or 2 part or anything like that? If so stop, do a water change and I bet your numbers will be fine.
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