It was suggested I baffle the tanks
. The old ones were. I took the middle road and just baffled one tank. Why? I figured it will only slosh when partially full and under sloshing conditions only one tank would be sloshing. I can always transfer water
to the baffled tank---I have a manifold and pump that allows transfer----which would prevent sloshing.
Probably overkill but when you do something like tanks
you hope not to do it again for a very long time.
Thx for all the great responses I am learning