Quote:
Originally Posted by Proteus
The rock is starting to look cleaner on a plus side. How high are po4 levels
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Ya, the rock isn't bad, just not as clean as it could be. PO4, last hanna check was 0.21. Probably a bit lower now, I've been using fozdown. With a Elos test, it's blue

I can never tell where exactly it sits with those kits.