You know we've been talking and I am having similar crap going on with my SPS... this sounds silly and is a real basic thing, but maybe recheck your nitrates? I had an old test kit that was giving me 0 - 10 readings so I thought I was fine... I checked with another test kit this week and it read 80! Needless to say water changes have been stepped up and underway, along with removing any sponges etc in the system and a complete sump scrub... ERRRGH! (This F%#@ING hobby sometimes!)
My corals are brown, poor polyps etc etc etc... I've been running Phosban, Ozone... blah frigging blah... at least my clams seem happy...
My problem is definitely bioload, but I like my fish so either I step up my water changes permanently or try a denitrator... *sigh*
Christy I don't know what the problem is in your tank, but what do you think the sandbed would be doing to adversely affect your system?
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135G Mixed Reef. Bullet 2, 25 gal refugium, 2 X250W MH + 4X 96W PC\'s, DIY Calcium Reactor, Coralife 1/6 HP Chiller, Phosban, Tunze, 2 closed loops & SQWD\'s, Seios, Coralife 4 stage RO/DI & a bunch of other expensive gadgets... I may never retire, but I'm gonnahavahelluvanaquarium!
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