LPS system - don't care. SPS system - test and dose regularly.
It's similar to Magnesium in that it doesn't usually need to be dosed daily if you're doing weekly waterchanges. If you add a bit extra to the waterchange water then it rides ok for the week. I noticed a big difference in blues/purples when I started dosing in my old SPS system.
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~ Mindy
SPS fanatic.
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