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#5
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![]() I don't know HOW everyone else here has been measuring or what they are measuring with... BUT I use Instant Ocean salt and and Instant Ocean Hydrometer and I do EXACT 5gal water changes too... Acording to my Hydrometer.... EXACTLY 1 and 7/8ths of a cup will give you a 1.021 spec grav... In my experience.
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45 gal fowlr, fluidized bed, UV ster, Rimora skimmer 25lbs Fiji / African LR 1 percula clown 1 diadema dottyback 1 6 line wrasse 1 juvenile picasso trigger 1 Coral Beauty |