Yeah, what he said. I'm guessing the rapid change in salinity killed your inverts. As well, tap water contains things that could cause algae blooms (or cyanobacteria).
RO/DI is Reverse Osmosis/Deionization.....a form of filtration most reefers use to filter their water.
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~Drew
10G Nano * 10G Sump * Deltec MCE 600 Skimmer * JBL Viper 150w MH * Zeovit * Vortech MP40W
Millions long for immortality who do not know what to do with themselves on a rainy Sunday afternoon. ~S. Ertz
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