FreakinReefin
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I have tried Tunze, Brightwell NeoMarine, IO and Aquavitro Salinity and by far the best is the Aquavitro. Pay attention to the mixing livels at different temperatures though. Off the top of my head I think the numbers call for 1.024 SG for the proper temp ranges and proper specs. You'll love that stuff though. My tanks have never looked better than when I started using that stuff and you sure can't beat the price for volume...if you can carry the 225g bucket of salt haha.