Thanks, mogie. Another mechanical adaptation to suit my slacker self. Got tired of crouching under tanks, swapping hoses around.

I saw in your recent thread about a small flood system that the screened cap on the tray fitting connected to the pump, once removed, reveals a 1/2" hose connection for draining. I have used those fittings for years and didn't know that connector was there!

With the valved arrangement, I just switch the valves to 'drain' and turn on all the pumps. A cup of coffee or two later, the tanks are drained and ready for cleaning and filling.