Maybe no iodine? It gets skimmed out fairly quickly, and animals consume it pretty good too... clams, shrimp... most corals... most successes seem to come when kept at a range of .06 - .08 ppm. My Seachem kit has a reference solution to validate the test kit as well...
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135G Mixed Reef. Bullet 2, 25 gal refugium, 2 X250W MH + 4X 96W PC\'s, DIY Calcium Reactor, Coralife 1/6 HP Chiller, Phosban, Tunze, 2 closed loops & SQWD\'s, Seios, Coralife 4 stage RO/DI & a bunch of other expensive gadgets... I may never retire, but I'm gonnahavahelluvanaquarium!
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