Hi folks
i understand that there isn't a 1 feet HO T5 light set available for aquarium use in the market althought there are 1 feet T5 tubes around. Just wondering if anyone does DIY for 1 feet T5? Or does anyone knows any shops or anyone that diy? I'm interested in getting some.
To DIY, you have to ensure that there are:
1) 1 feet reflector
2) 1 feet T5HO tube (I'm not aware there is any of this length)
3) e-ballast that support item 2.
By the way, do you really need T5HO tubes for a 1 feet tank? IMO, PL tubes can also do a good job here.
Cheers,
U.K.Lau
thanks uklau
it's just the heat that i want to lessen.
These are sold in HomeFIX as Cabinet lamps. T5 with electronic ballast. The 31cm version is about 10 bucks if I remember correctly. Profile is very small and neat. Comes with tube to tube extension wire to daisy chain them if you need to run more than 1 tube. Just need to DIY a housing.
going by the wattage, they aren't high output t5s. a 2ft HO should be 24W (not 13W as listed here) and a 3ft HO should be 39W (not 21W for >3ft as shown here). in fact, it seems to me that these bulbs are even less efficient than t8 FL bulbs
Yes, all are Normal Output. Why is it less efficient than T8 tubes?
my 2ft T8 tube has 20W output, higher than the 57cm and 67cm ones listed here
Isn't lighting efficiency measured in lumens/watt?
The power rating like 20W is the input to the ballast. It just tells you how much power the light is using.
I may be wrong, but a 20W T8 may not produce as much lumens as a 18W T5.
some figures for you guys to ponder
a) osram lumilux t5 24w ho - 1600 lm
b) osram lumilux t8 18w - 1300 lm
c) osram lumilux t8 36w - 3250 lm
d) osram dulux l pl 36w - 2750 lm
thomas liew
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