Does anyone know how many times the water in a raft system should be turned over in a day?
I am in the process of figuring out what the best pump is for my system, whether to go with a bilge pump or sump pumps and what size. I would like a 3/4" outlet on pump. Of course, trying to use least amount of energy without taxing my pumps too much as well. One will be circulating constantly (raft beds) and one will be timed(verticals). I may be going solar, will know more later today.
My system specs:
three 4'x40' raft tanks (16" high, guessing the water level will be around 12"),think I calculated these tanks to hold around 1200 gal each
The center raft tank will have a pump that returns water to the highest fish tank (located approx 4' in front of raft) and then the fish tanks stair step down from each other(each having a 4"PVC waterfall into the other) with the fourth fish tank flowing into a buried 55 gal w/ pump that goes up to verticals (verticals gravity feed back to this 55 gal drum as well) and the pump also goes up and over to the outer two raft tanks. Returns down the center raft tank back up into highest fish tank(IBC tote).
four IBC totes fish tanks(cut @ 200 gal mark), water level may make it around 180 gal each.
Total water in recirculating system approx 4320 gal?
I haven't taken into consideration how much water will be flowing throughout the verticals.
There will be 350 vertical pots(approx 60 stacks) also on another timed pump with solenoid. I was originally planning to incorporate the IBC tops into the system as gravel beds, but have not done so at this time.