$150 in acrylic from Lowes and about 2 hrs work
Design is simplified. First system was going to be too much work to build.
This one has (2) mechanical filtration chambers 6" x 7" X 20" each
with up-flow design for zero bypass.
Bio media chamber is about 2.7 sq ft or right at 20 gallons.
Last chamber is for heaters, Co2, drip system, overflow drain and pump pick-up.
System should flow just under 700gph with an external Mag 9 return pump.
