Finally ...
I took back some plumbing parts that I did not use and ran the whole return out of 1/2 inch pipe this time, added a ball valve for each tank and moved the returns to the front of the tanks.
After the return credit it only cost $ 2.50 for all the 1/2 pipe and fittings
Now maybe some critters at sometime.
I took back some plumbing parts that I did not use and ran the whole return out of 1/2 inch pipe this time, added a ball valve for each tank and moved the returns to the front of the tanks.
After the return credit it only cost $ 2.50 for all the 1/2 pipe and fittings

Now maybe some critters at sometime.