Cyano & Lighting

[input80]

Ok, here's a thought I had recently, don't have a clue on how to set up a poll. For those that have had cyano issues, do you run moonlighting & for how long? I am using 4 (changed to 3 last week) AI Sols & am thinking that having the moonlight feature could possibly be a contributor to the amount of repetitive cyano on our 120? They are running with the director & basic programming Noon-midnight, ramping up from 830am. On the 80 I have a 6 bulb T5 fixture 11am-11pm basically, with just an led strip (all night) for moonlight. I have a lot less cyano comebacks in the 80. I have cut down feeding quite a bit lately on both tanks. I am thinking lighting might have something to do with it because I read somewhere that a 3 day lights out (not complete blackout) helped get rid of it.
Yes I have treated with chemiclean & found it worked well, for about 3 wks to a mth.
Just looking for thoughts here.
Does anyone have a reliable "director" setting that they use?