[random]

Just wondering, is there significant savings in energy usage/cost when going from pc lights to t5ho?
what we have: 2x96W PC fixture,
what we're looking at: 4x39W T5 HO.
Our current fixture is pretty new, so unless there's a big difference energy-wise, we weren't going to switch over.

t.i.a.!

 

[RocketSurgeon]

2X96=192 Total watts
4x39=156 Total watts

4 bulbs cheaper than two?

 

[drew1092]

Well, energy consumption is not just determined by wattage but also ballast types. MH, t5, VHO and PC will all have varying energy consumption despite wattage. Also, ballast type can make a difference, ie: magnetic vs electronic. As for bulbs, PC bulbs are not cheap! Sometimes $40-60. I have seen t5's for $10. I am not sure though how energy efficient PC's are.

 

[ibanez2k]

T5HO bulbs have over twice the PAR output per watt than PC bulbs so for your energy usage you get WAY more usable light. Plus PCs need changed every 6 months and T5HO you can wait a year before changing. Very worth the switch.