All homemade - it would have been soo much easier to just buy a tank, and probably about the same price. 1/8" PVC welded to make a tank liner. 2" closed cell foam insulation, 1/2" pvc for aeration, 1/2" pvc with boyu pump for filtration. Capacity is 33 gallons all filled up. This will have 25 gallons of solution in it.