Multi Tank + UV return sanity check

[IanWR]

I would move the gate valve that leads to tank 1 to the other side. By that I mean you have a gate before the T, I would have it after. As you have it now your gate valve restricts the flow both to tank 1 and your reactor/uv setup.

There are other bits and pieces I find confusing. For example you will have a 1.5 pipe, a 1.5 to 1.25 reducer, then a 1 barb, or some such. Wouldn't that reducer have to be 1.5 to 1? Anyhoo, I admire the preplanning!

- Ian