I recently built my regulator (2-stage off ebay and the post reg set from diyco2) and reactor (rex griggs). I set it up over the weekend to the outflow from one of my Fluval 306. I have it low for now, but need to calibrate the flow.
I am also a DIY person and loved doing the research and getting everything built.
140lbs of CarbiSea Eco-Complete, Black
Finnex FugeRay Planted+ - 9 hours/day
2X Fluval 306s w/ Seachem Purigen
2X Fluval E 300-watt heaters
Pressurized CO2 - 5lb tank, HPT500 regulator, Clippard Mouse Solenoid, Fabco NV-55-18, CO2 dropper
1 Jumbo Mopani
1 Med driftwood
Plants - lots