I have been using reef crystal for a year now and never ever had brown sludge. I have gone through 4 buckets already and nothing but happy. I have huge large palythoas and zoanthids polyps and my sps are doing great and growing very fast.
I will not change salt and will stay with Reef Crystal. I love it and it is much cheaper than H2O which I tried and had bad results with my zoanthids and some SPS.
Best salt I ever used and I tried a few (H2O, Red Sea Coral Pro, Seachem). It always mix clear and fast. I even use it right after mixing when replacing the water from the coral I sell and it clear become clear in no time.
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Originally Posted by lastlight
Can't be reef crystals I'm left with a lovely brown layer of sludge after every mix lol.
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