Cold. less ur drip is from a storage container gravity fed then keep it at tank temp
But don't dose hot water from ur homes pressurized plumbing into your tank. Not sure on ur setup but ur go through more pre filter and or build up heavy metals and sediment in ur tank. If u have a lot of plants shouldn't be an issue.
But don't dose hot water from ur homes pressurized plumbing into your tank. Not sure on ur setup but ur go through more pre filter and or build up heavy metals and sediment in ur tank. If u have a lot of plants shouldn't be an issue.