i have a 48" dual 54w t5HO light for my 75g tank that i was thinking of growing several different kinds of epiphytic bromeliads and tillandsias and java moss on wood on the background. the lights sit almost right on the rim of the tank and doesn't have legs, although the fixture does have a fan in it. i'm a little worried about heat, since a 75g is only 20 inches tall. the plants will end up within a few inches of the lights.
i'm not sure if this is bad or not as the info i have managed to find is a little sketchy. i am not sure if i should leave the top open and choose plants that like drier conditions or put on a glass top and keep higher humidity in an effort to keep them from drying out (if the light is too hot).
i also have a 24" dual 24w t5HO fixture as well, although i'm not sure if that would be too little light. in that case, i would need to put on a glass top to keep it up as it stand on approx 4" legs.
any help is very welcome.
i'm not sure if this is bad or not as the info i have managed to find is a little sketchy. i am not sure if i should leave the top open and choose plants that like drier conditions or put on a glass top and keep higher humidity in an effort to keep them from drying out (if the light is too hot).
i also have a 24" dual 24w t5HO fixture as well, although i'm not sure if that would be too little light. in that case, i would need to put on a glass top to keep it up as it stand on approx 4" legs.
any help is very welcome.