You must have fuct up pretty bad in your RDWC huh?
Yeah, a huge root mass, warm temps, and not enough flow = fuct up sht! But for a while it was a very productive. It blew away everything else out there. Until one summer when I got the rot...
The problem I had was a heat (ended up buying chiller when I got a lil root rot), a tight space, and all those fricking hoses. It was based on the popular versions many use w 3/4" returns and 1/4" feeds. I actually had two systems given to me after I set mine up and they basically identical.
Now with that said, I probably will build a quality UC system w large PVC returns and a huge non-submersible pump. It's more about not having to deal w media that makes me wanna go UC than increased yields. Cause coco is awesome when put on drippers.