I have two I believe they are the 275 gallons plastic tanks in the cages. I created a manifold for them so they're plumbed together. It connects to the ball valve on the tanks with a union fitting (for easy disconnection), and then tees together and has a ball valve on the outlet. I also tapped the top of one of the tanks with a 1" bulkhead fitting, and a male banjo fitting. It all works great, I just out grew them. For some reason I can't get a picture to post on here. If your interested I can e-mail you a picture