Made some progress hunting down supplies this week.
Ordered the etc heater controller, 3 inch clrear gate valve, 3d backround being shipped to midwest customs.
This stuff just arrived got some more purigen and 20L of matrix to add onto the two laundrey bags of already seeded bio.
And was able to get some of the pvc. Figure i would start at the sump level and work my way up. Just some unions and 3inch tee's reduced to 1.5 to attach to the gate. Want to put unions in as many spots as i can think of and be able to disconnect easily.
I was going to scrap the idea of using the pond boxes because i dont like have to reduce from my pump (1.5 inch) intake to the pond box inlet (3/4 inch) but love the idea of having the bio sit ontop and avoiding some bypass. So i cut a 2 3/8 hole (VERY SLOWLY) into the sides of the pond boxes and plugged the 3/4 inlet. Had to mess with a bunch of fittings at home depot but eventually found that a 2 inch trap adapter fits perfectly. The threaded portion sits almost perfect in the hole but
will add a little teflon tape to get it to sit a little more snug. Cap holds it in place and reduce down to 1.5 inches on the pump side. All i have to do is open the box the adapter slides right off, should make pump maintence a breeze.
Still need to order some tru union ball valves, loc lines (im think two half inch nozzles per return) ,check valves, and a 3 inch union to connect the gate to one of the tee's. Figure better add and not regret it later incase i ever need to get to the get valves.