Am I right in saying you're doing a fish in cycle with a 75g tank?
You've got more energy than me, I'm struggling to find the energy to do daily water changes on my 90L since my plan to add a mature filter went tits up. Bugger doing daily water changes on a tank that size!
Well, it was more a matter of necessity. Our living room wouldn't hold the 25 gallon they were in AND the 75 gallon, so, it was up for a few days and in went the fish.
Thank goodness for the python system. I would be killing myself with buckets if I didn't have it. Defenately worth the investment already.
Let me tell you though I'm almost regretting this tank with all the problems with nitrites and ammonia I'm having.