Pond Boss Forums INTRO Questions & Observations Winter tilapia

it possibly could work, depends on flow rate and disbursement of the warmer water.

if you have it in a cove or corner or type of area that will hold the warmer water it has a chance. If it fows out into the middle of the pond or open water it will just disperse into the cold water and not have a big enough effect.

Also , the temp of 55 is pretty close to the leathal temp already so it will not be able to lose much heat and be effective.....

I have seen tropical fish here in N Florida survive in a pond that has a artesean well flow in a shallow corner. the fish lay in the warmer flowing water. Even the severe winter we had a few years ago that even kill native subtropical fish didnt kill them as they had this little warm water fefuge... Note, the well flow is at 70 degrees though