Merch store (I have more than just rain-tank shirts): null patreon.com/suburbanbiology I welded stainless steel pipes at custom angles to make a manifold for my 30,000 gallon rain tank. I used a $50 laser to do it. If you copy this project PLEASE buy laser-safety glasses first. This laser could blind you and even could potentially burn your skin or start a fire. Please be safe.