I don't think saturation was a problem at all, and realy asided from a couple hypotheticle articles based of very old studys (unless there are new studdies I am not aware of) I have never heard of anyone who has had reciding corals due to saturation. my own exparaments showed that after 10 hours of intense lights I didn't benifit in growth from more light, but I didn't get corals reciding either, growth just peeked at 10 hours and I was only waisting power for 12 hours of light.
what I did was actinics turn on 2 hours then the MH come on for 8-10 hours, then the actinics stay on for 2 hours after that.
problem with trying to guess what is going on over the summer is you need to know what your temps did. 99% of the time summer problems are from temp changes.
I would start logging temps. I bought a themomitor that would record the daily high and low values and I would record them ever morning and see what was going on over a month or so.. this is what based my desision to buy a chiller.. my temp was swinging from 78 to 88 (hotter on real hot days.) after the chiller I had a swing from 79 to 81. which produced much better results in the corals.
Steve
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