Only 57 tanks got put into service in this design.......
It's going to be a continuous drip system for water changes........ not continuous really, but timer actuated for about 4-6 hrs per day which will change out 15-20% of the water daily. Only 6 tanks (the 125 and 5 10g's) will require manual water changes, and they're within 6 ft ot the sink.