Few pics of system....
Air for everything is provided by a ap100. It runs both reactors and the halo of pvc above everything with airline fittings tapped into it.
Due to the design of the filter it was easier for me to knock 4 holes in one overflow then using both. The other will be used in the future for something like heating. Had to cut overflows and used egg grate on the top. Will be making a prefilter sponge for the overflow to keep food out of the socks. 2 55s sit behind the overflows. 2 7x16 100/200 micron socks in each. About 25 lbs of ceramic rings in each 55. Water exits right above the wet dry pump. 4800 gph pump carries water to the bio towers. In the bottom of the 150 gallon rubbermaid that is the wet/dry basin, is a 1K gph pump that feeds both 55 gallon reactors with 3 ft3 of K1 each (left room for chips in each) Reactors and wet/dry exit in the opposite end of the pond from the 55s. Return pumps are on the otherside of the tote with the wet dry pump. Will be using a pair of darts eventually. Pond is drip fed.
I left the water level down a bit in case I decide to put some pothos in there, and figured the Rhaphs won't smack thier snouts with the water level lowered. Hopefully they make it to this tank.... lol. Keeping Characins I figured the water level idea was decent.
I also glued some acrylic strips to the bottom of the tank, and drilled holes in the top. Even these monsters will have a hard time hassling the divider in the case I need to use one.