stevieduk
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I did a 20% water change last night with a different brand of salt , and have checked my readings today my Mag is 1400, and calcium is 450 ish, will these levels harm my sps corals. should i get them down a little
readings to high ?? with new salt mix
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Crabs McJones
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What salt mix were you using, and what did you switch to? Did you notice an increase in salinity as well?
Randy Holmes-Farley
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Those levels are fine, and are close to the target levels for some mixes. 
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stevieduk
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i was using reef crystals and changed to Tropic Marine. My corals are living great but not growing, ( no white on the edges as it grows ), mine is just thick with polyps, and was advised to change to tropic marine.
no ,no trouble with salinaty
no ,no trouble with salinaty
