I dont know if I can explain this but maybe if you have your pipework from your dt pointing down into your sump and lets say it is 1" pipe and the opening of the pipe is lets say 12" from the bottom of the sump maybe you could buy a piece of 2 1/2" pipe 14" long, suspend the purigen bag half way down the inside of the 2 1/2" pipe using cable ties or nylon string.cut the bottom of the 2 1/2" pipe at an angle of 45 degree's.place this pipe with the cut touching the bottom of the sump and the DT pipe inside the top of the 2 1/2" pipe.the dt flow would drain down inside the 2 1/2" pipe and out the bottom and also run through the bag.Maybe??????????
Maybe a bit over engineered, but very thoughtful and creative David S. Thank you for the suggestion.
Here's what I've done for now... (see photo) which seems to be working, but can be improved. I will explain my reasoning in the next post. Here, you see a view that is about 1/2 the 10.25" x 11.75" x 10.5"-11" high drain section of sump. Pipe from G-H 700 overflow
700 gph Overflow complete kit - Glass-Holes.com dope aquarium stuff (I tend to plug quality and very customer service oriented vendors; they've earned it!) leads into 1.5" recommended drain pipe. Design of cabinet and placement of sump required a 20 degree offset to place drain pipe comfortably in sump and close enough to tank wall to leave room for getting sock on and off (plastic sock ring snaps right over pipe joints..easy on/off!). Pipe adapter and barb fitting with approx 2" of black vinyl pipe to help deaden sound... few inches off glass bottom, just enough to get sock on but have pipe well below water line. Design of G-H overflow and their siphon break very thorough aerate drain water.
Ok. That's the plumbing.
For now, I placed the Purigen inside the sock. Purigen bag is very tightly packed (unlike Chemi-Pure bag), fits neatly in sock and gets full force of whatever is coming down that drain pipe.
Black bag under the sock is a Chemi-Pure purchased yesterday.
Foreground and left is pump and air tube for a Reef Octopus installed last week. Anyone reading this who has seen the earlier design of this sump might see that the baffle (top down) which was on the left of bottom up baffle you see was removed to add 1" additional working room in drain section.
Area under sock has very active flow... in fact, generally very active flow throughout this section given the large drain and skimmer's output. Chemi-Pure bag is designed to allow flattening of contents... lots of room to shape the media and increase surface area....that said, I'm getting another bag and will test placing 2 in the sump baffle previously holding the Purigen (now in the sock).
