Quote:
Originally Posted by mike31154
Yep, saw two different pails at one LFS in Vernon last week. I think the new formula is called IO reef crystals and is indeed designed to provide better levels of mag, calcium etc for reef tanks. Costs substantially more too.
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Reef Crystals has been around for a while. Is the OP simply referring to Reef Crystals or a whole new formulation for plain old IO?