I re-tuned the pipes, opened the inflow all the way and re-adjusted the full-syphon. Now I had 2 additional problems- Overflow chamber now loud, and pump has air in it that won't go away.
So I at least fixed one part, modified the overflow.
Previous owner had already pulled out every-other tooth from the overflow barrier like so
While this worked well for the 600gph he had going through it, the 1000 or so I'm running through was overpowering the slits, and the one side had wide opening for the inflow pipe which made a ton of noise.
So I followed the mega-flow overflow mod to a degree,
http://www.dursostandpipes.com/popular-modifications/5-mega-flow-overflow-modification.
I just hot glued some gutter guard stuff to the place where the teeth work, and made sure it was all angled so the water wouldn't shoot out and splash everywhere. Still makes a tad bit of noise, but once the canopy goes on I'm sure it'll not be noticable.
Still don't know what to do about the pump being noisy. It sounds just like there's a few air bubbles stuck in the impeller chamber, but I just can't shake em loose. Tried turning the pump all different directions with it off or on, tried surging the pump by pulling and plugging in power quickly.. Just don't know hwat to do. Any help here guys?
Also added some bacteria stuff to help some more, I've used it in the past with good success.
