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Need help, drop from 220 to 170 ppm in 12 hours?
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09/18/2018, 10:40 PM
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bertoni
RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
You're welcome. If you start seeing large tannish or off-white builds on surfaces, you might want to look into abiotic precipitation prevention, but I suspect your corals are your main suspect.
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Jonathan Bertoni
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