Thx Simon,
Not really sure what caused my crash at this point. Tank was up and running for two years doing great the only things I changed around the same time as I added some T5's to my LED lighting but I also treated my tank with flatworm exit.
Watched YouTube, read the directions, read forums and seemed safe, did a water change and use charcoal after the treatment but lost some softies and all my SPS and a few fish within two weeks of doing that. Water parameters were perfect. I have read that the flatworms can release a toxin that can harm fish but not usually coral? Needless to say I took a blow to the ego, the pocketbook, I almost stopped reefing. I'm attached to my fish so that's what kept me in it. Will be rearranging the tank soon maybe a new build
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