i just bought 250w metal halide kit for my 50 gal salt .........it came with the bulb ballast and reflector .......do i need anything else like a fan or anything please help i am new to the hobby
If you put it inside a canopy you will need a fan if it makes the water tempeture rise too much. If its a pendant that you hang over the tank just keep it high enoug that the temp. does not change.