OK, 'jettawagon' was kind enough to let me fill this thing with some of his surplus bioballs. THANKS!!!
Next, I glued on the top cap and tightened up the bottom access. Voilą its done!
http://i101.photobucket.com/albums/m...psf47d9482.jpg
I have an extra 260 gph pump sitting here so hooked it all up. I got the pump in the bucket and filled it with water. Problem, as you know we need alot of pressure to "Prime" this thing and get out all the air bubbles. I'll admit (as it wasn't working) I was fearful of a dis-assembly. After finding a large syringe, I was able to pressure infuse by hand the water that was needed into the 75' of coiled hose (inside), to prime it. After that the pump worked great and I was able to easily fill the rest of it up with tap water. It is sitting recirculating water from the bucket. With a 260gph it has a steady flow out but no pressure.
http://i101.photobucket.com/albums/m...pscdc60c7a.jpg
There are a few things outstanding still. The hoses leak a bit where it attaches to the denitrater, I need to get 2 hose clamps (this is easy). Also, I think that the screw on bottom cover might dribble (leak) a bit. I'll try tightening it up & if that doesn't work, silicone. I think so that I can sleep at night (fearing a leak) I'll use the silicone, but it might make it really hard to get back into - lets hope I don't need to. (I'll silicone just a bit for a seal but not the threads!)
I need to open it, dry it, silicone it, let it dry/cure, ventilate it, and then I think it'll be water time again. This will be a few days & I'll save some water from the next water change to help back fill the new volume that I need.