Considering displacement for sand and
LR, you will have about 28 gallons of volume. At 1000
gph combined lateral and horizontal flow, your critters are facing a 35 times turnover rate per hour. This would be comparable to a human on a treadmill at full speed, 24/7, for the rest of his life. Which, come to think of it, would come to an abrupt end of course. My 135 is at 20 times turn over and that gives nice currents throughout the tank. I think you should give this more thought.
