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He posted his SG. Anyways, I think you should just change out all the water. There might be some nasty byproduct or something in there. And make...
I think you need salt in the water...
...and have a gigantic spike in nutrient levels a year or two down the road? No thanks. You want to trap nutrients, not detritus.
Leave it, you never want the RO membrane to get dry. DI is necessary for an algae-free reef IMO.
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