Im planning on building a outdoor pond in my backyard within the next couple of weeks. the pump will be here mid week i ordered a 3000gph pump. the size im kind of going for is like 8' X 4' X 4' but the space I'm working with is 11' X 4-5' area. and i was wondering to do this how much liner would i need. on lowes site they said a 14' X 21' liner should be capable of making 1500gallon pond.
