As DIED said, the answer is probably already covered, but my inclination was going to be to go with warmer temps in general from the aquifer water source leading to better growing conditions and a longer growing season for the fish. Unfortunately, I'm still enough of a novice to not have made a connection to snails/mollusks being able to thrive better, but I did know that RES like to eat 'em!

Todd La Neve

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1.5 & .5 ac ponds - LMB, BG, RES, YP, GC, HSB