Your basement is comming together nicely! Great work youve done! Cant imagine doing waterchanges on all those tanks before the drip, what is your waterchange % on the drips? I am one of those close to 100% waterchange a\week guys. Offcourse you have to drip more then that since you also lose some of the clean water.. 20% of tankvolume each day is good i think. Hell off alot water in your case
I change somewhere between 240 and 300 gallons a day on my 1800 gallons of water in total. Thats about 15%, the big tank drags it a little down.