After the two ducklings hatched I had a 100watt buld over the brooder the temp was 90. I felt bad that the light was so bright so I put a black light reptile heat lamp over them. The temp is reading 90. Is this type of light ok? Can they be taken out of the brooder and held? If so when and when can they go outside for a little bit to walk around? When should I introduce a tiny tub to swim in? Is it about 5 weeks? One of the ducklings still has some dried membrane on his head I tried to wet a cloth and wipe it off but it won't come off. Will it eventually come off or can it cause a problem with bacteria etc? It is dried on pretty well.