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Originally Posted by newguy  that sounded like magic to me  looks like it's out of stock on adg, would it work if i buy the adg liquid and use it in some other dropchecker made by redsea? |
99.9% sure that they work on the same principle...just would need the Red Sea CO2 color scale if it is a different indicator. And there really is no reason the indicator would need re-filling unless you spill it.