I am trying to decide which way I want to go...using a 1 HP pump I took off a Jacuzzi, draw water into a filter from the deeper parts of the lake with 1 1/2" pvc and then back out into a fountain....or should I go with getting a pump that will pump air into the deeper parts of the lake. I built this 5 acre lake behind my house (about 30 feet)so power is no problem