i just always want to grow neps in an aquarium, but
now i know how to heat, but i do not know how to cool it down.
all i see on google is these super complicated machinery!
and what wattage do you reccomed?
also, about the timers. are they like come in a bulb or
a litte seperate part that you plug it on an outlet and
plug the light into the timer?
please excuse my bad english