that's part of the reason I'm upgrading to a GHL controller - cloudy day simulation can be enabled! I have some new corals that are still adjustng, so I'm hoping they'll make it: I'm taking you & RC's advice - keeping the lights out for a few days. Kind of annoyed, cant find my carbon reactor anywhere...afraid once I put the lights back on, if the conditions (whatever they may be since I can't figure it out) are still there, the dinos may come back.
I've heard conflicting advice on the water changes - my book on nuisance algae advises not to do any changes. I already did one 20 gallon water change with little results...I'm skimming really heavy and trying to disturb the dinos as much as possible so they get sucked up from the skimmer.
I was about to dose with some anti-algal chemicals, but the figured it will probably just kill the very things competing with dinos for nutrients.
Do you think its the new lights that triggered it? I added a bunch of new nass snails yesterday to help me take care of detritus even more, just in case that's a contributor - although I think that would be a cyano related problem.