Yes the tank will be lit up by 1000W metal halides, and yeah the actuated ball valves are kinda pricey and with adding up the amount of water I would like to move in 10 seconds(400gallons) I have to do some figuring out, as I need to move 144000gph to move 400gallons in 10 seconds, I might have to rig some trap door that is actuated and a large fiberglass tube to transfer the water cuz I dont want to spend thousands of dollars on one 16"+ daimeter actuated ball valve...
if anyone has some suggestions they would be appreciated!
Thanks