Photos of the setup
Krusty’s original room schematics
Krusty keeps ballasts, reservoir and CO2 in separate room
Reservoir, feed and drain line schematics
Grow room with looped lines
Inside of the bucket
Bucket with all hoses and lines
In the 1 gallon bucket between the two 5 gallons just drill small holes for soaker hose (1/4" used for air) to pass through.
Room in full bloom
All photo credits go to Krusty