Hi Jeremiah, well you're right on about the handled bottles, they don't swirl very much, although I really can't imagine keeping up with a more efficient version...I am wondering though, at present, are you able to keep your water clear
enough to see through to the bottom and has the upkeep surprised you or do you think maybe my system is an anomaly to a typical set up?
I've often wondered why no one has developed a filter by facilitating the valve opening on the bottom of these IBC tanks....seems like a no brainer to me but I just haven't had the time myself to work one out yet.
Btw, I have about 60-80 tilapia at present.
Good luck on your filter development, it sounds interesting.