are you taking at least 5 scoops before a reading? Nearly always, on a first, or second dip you'll have a tiny lil microbubble that's attatched itself to the swingarm (Even the smallest lil bubble will make a massive difference.)
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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
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