If you have a heat lamp as the source for heat in the coop just put the waterer under it.
Do not use the clamp on one of those lights to secure it to a rafter or beam. Take some extra time to bolt or rivet chain to the reflector and use chain and screws into wood to secure it.
Do not use the clamp on one of those lights to secure it to a rafter or beam. Take some extra time to bolt or rivet chain to the reflector and use chain and screws into wood to secure it.