I hate to say this, but the aiptasia will likely come back. If it were my tank, I would remove the sand and add some berghia. Either way, again good luck.Currently making a bunch of RODI water in prep for some major tank work. Either wednesday or sunday I will be draining down the tank, removing all the rock for some cleaning and aptasia removal, sucking out all the sand in the display and fuge it getting moved to the trash. Yesturday I doesed 500ml of Reef Stew to the display and added a box of Siporax to the sump to increase biofilteration in prep for the sand being removed. I really really hate and dont want to go this route but it looks like its going to be the best method at controlling the amphidinium dinoflagellates. Since nothing else has worked and amphidinium stay on the sand gains protecting them from all other know methods of control removing their perfered sanctuary seems best. DinoX did help some I think but not completely and it had the nasty side effect of killing sps. Increased no3 and po4 has not done much but I thinknit has slowed them down some. 3 day black outs are ineffective against amphidinium because they are both photosynthetic and autotrophic so they can survive with no light. I think I may have pinned down the main cause for the dino bloom, newer tank with low bio diversity, low no3 amd po4 combined with dosing ChemiClean to treat cyano was the last factor to set the stage for dinos. With already low bio diversity using ChemiClean futher killed off benifical organisms leave a large place for dinos fill, thats the theory anyways.