[quote="Ken"]Except the 500 gal is at 87 dgr, all looks well though.
87 dgr and all looks well?

My tank got to 86F in the
morning on Friday and now I'm going nuts thinkin' chiller and sump and auto top off and new lights so I can remove the glass tops. Am I maybe worryin' a bit too much? I don't know. I liked to deal with it for peace of mind.
Thanks for the book recommendation. It's on my "To Buy" list.
How many tanks do you have running? and how big is your trigger tank? and what do you have in that tank?
I've always wanted to have a trigger. But that would mean doing another conversion and I'm not about to do that. Maybe I could get a Niger for the current system. I like the looks of a Crosshatch also, (Xanthichthys mento) and they sound relatively peaceful.
Cheers.