Awesome!!! Thank you very much for telling me!So I took a look at the stock pump in my Waterbox 20. It is a Hidom AP-1500, rated at 1000lph which translates to 264gph. Noisy thing that it is. I may look into a DC return swap out or maybe a Sicce.
I couldn't find it anywhere online. I will be trying out more things tonight to see if I can get it working. I am thinking something keeps clogging in the slits in the back chambers. If nothing works I think I will get a pump rated at a lesser flow.