Heat emitted from Lights

[keetkeet]

Hi, just want to see what kind of opinions you guys have, from your experiences using lights for your tank.

Comparing:

(I) 01 x 150W MH Light

(II) 04 x T5 (39W) Lights

1 MH lights has 150W of heat, and 4 T5 (39W) gives off 156W.

Does this mean that the tank receives an equal amount of heat? And for that matter, what happens if it is 06xT5s?

[arcanehacker]

I dun think its equal. MH gives out much more heat.

Wattage is not a measure of heat. I think..

[jamomatt]

Pls correct me if I made a mistake:

the wattage is the power drawn. As T5s are more efficient, energy converted to heat is much less. The wattage is just for you to calculate how much electricity u using. 150w MH cannot compare with 150W T5 in terms of either heat generated or penetrative power. Even though T5's are more efficient, MH does reach better depths.

[loonz]

used to be using 150 MH ...now using 4 x t5s....

heat generated from the former is hot enough to burn your hands if u touch the equipment after half and hour or so...

hardly any pain due to heat at all handling the t5s...after hours and hours of operating

hope that helps..