Greg's 75g

[FishyFishy!]

Originally Posted by gregzz4

ATO tank pic
I may unplug the heater - haven't decided yet
Looks like I'm using about 1g/day, so I'll get 8 days before the pump is shut off
The upper float kills both the powerhead and heater, and the lower kills the ATO pump
The relays in the previous pics are for these 2 floats

Man, when I get to this stage in my build imma have to ask you some pointers on the float switch's. I want to rig a few to cut the return pump in the event of a blockage. And the same in the ATO tank.

Everything's looking fantastic. I thank you for having such a detailed build thread. Theres a lot I can learn when my sump room build is under way. I will have 6 tanks total plumbed into the same system, much like yours.