czreef Posted February 18, 2015 Share Posted February 18, 2015 Hey, I did my regular water change yesterday and added Seachem Matrix media to the filtration yesterday too. Today all 3 green acros I have are brown with little to no polyp extension, no STN yet that I can see. Other corals stylos, digis, stag, pavona, monti all look fine.....so far, I have some LPS etc everything else seems happy too. It happened overnight. Water Parameters: Ammonia- 0 Nitrite- 0 Nitrate- 5< Ph- 8.2 Alk -10 Calcium- 500 Phos- 0 Mag- 1400 Spec grav- 1.025 Temp- 78 It's a 20g tank btw. I've been looking around online- seems adding the Matrix may have stripped the nutrients out of the water column too fast...maybe? If I did shock them some how, what are the chances of turning things around and getting them to color up again? Thoughts, suggestions appreciated. Quote Link to comment Share on other sites More sharing options...
Saltwater newbie Posted February 18, 2015 Share Posted February 18, 2015 As long as the flesh is still there they can come back. 1 Quote Link to comment Share on other sites More sharing options...
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