CHE is best 60 watt for 10-20 gal.. Bulbs burn out sooner and i dont believe are as efficient. Place it on cool side for 76-81 ambient as if i remember you have a uth for hot spot already.
And yes they dry out tanks. They are hard on 10G tanks especially.. If your tanks bigger 20/30G long get a big water bowl to help and cover lid with plexiglass or tin foil if you dont want to spend $15 on plexiglass.
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