horkn
New member
<a href=showthread.php?s=&postid=7817338#post7817338 target=_blank>Originally posted</a> by uf-engineer
I’ve read conflicting points of view on this. I'm trying to get a straight answer. Do T5s get as hot at MHs?
I’m looking for lighting on a 90 AGA, 24†tall. I’m considering either 2 -250 watt MH or 6-8 T5s. I have two fans in my canopy for cooling. A chiller is out of the question.
Thanks
many 90g owners here on RC run 6x54 of t5ho with good refelctors, and not overdriven, and have sweet tanks that grow anything. you really dont need more than 6 bulbs on a 90.
i myslef have a 90 that i am slooowwwwwwly getting the equipment for. If i were to light it with all t5ho, like my 35g, i would run 6x54w t5ho, with icecap reflectors, and triad, advance, or any other spec t5ho ballasts.
however, i am not going sloely t5ho, and I am removing the centerbrace, euro mod bracing the tank, and running a centrally mounted 250w DE mh (14k or so) and hopefully 4x54 of t5ho in super actinic, and blue+ or actinic plus maybe a AB in there for a less tidy bowl look when the halide isnt on. it looks as if i may only be able to run 3x54 of t5h due to space constraints in a 18" front to back tank. if i can find a thin but good DE MH housing/ reflector, then i may be able to go with 4x54 of t5 along with the MH.
the best tanks i have seen use mh and t5ho. shimmer, and less heat than 2x250 mh, and a little less electricity used even with all the bulbs on at the same time. but the point of me running mh/t5 is that i can run the mh for 4-6 hours, and use the t5 the rest of the day, depending on bulb choice and whatnot.