Quick t8 fluorescent bulb question - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 15 Old 02-28-2013, 10:09 AM Thread Starter
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Originally Posted by beaslbob View Post
for rectangular tanks, I just let lowes cut some glass to fit.

my .02

Essentially what I'm going to go get done this weekend =)
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post #12 of 15 Old 02-28-2013, 11:12 AM
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Originally Posted by rexpepper651 View Post
sorry ot be off topic kinda but would a Life-Glo 6500k tube work better then using a normal 6500k Phillips tube normally found in local diy stores?
Yes, there is quite a difference, but the significance depends upon the specific situation.

All T8 tubes are not the same. Aside from the spectrum and colour (Kelvin), there can be a difference in intensity (brightness) which is dependent upon how the tube is made. For a very simple example, the T8 tubes were developed as more efficient versions of the original T12 tubes. A GE, Phillips or Sylvania T8 Daylight 6500K produces more light intensity and with less energy consumption than a T12 of the same type/manufacturer. But even within T8's there are considerable variances according to the way the tube is made.

I use GE and Phillips T8 48-inch tubes on my larger tanks than have dual tubes. There is sufficient light over these tanks that I do not notice much of a difference. For years I used only Sylvania, then Phillips [Home Depot changed from carrying Sylvania to Phillips]. For the past 4 years I have used one Life-Glo and one Phillips or GE over each tank. [I took advantage of a store closing to buy up several Life-Glo tubes at 1/4 cost. When these are gone I will go with just GE and/or Phillips on these tanks.] The slight increase in intensity with the Life-Glo caused brush algae to increase, so I had to cut back the duration to balance; I ended up going from 11 down to 8 hours to do this, so the additional intensity of one Life-Glo was fairly significant.

I recently experimented on my 29g single tube tank. The Life-Glo tube became exhausted after 1.5 years, so to replace it I bought a GE. The plants began dying off. I left this for 3 months before replacing the GE with another Life-Glo. I could see a considerable difference in brightness, and obviously the plants did too, as they began to rebound, growing new leaves from the roots. Nothing else had changed in this tank during all this time.

Byron.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If youre going to take it under your wing then youre responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]

Last edited by Byron; 02-28-2013 at 11:15 AM.
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post #13 of 15 Old 02-28-2013, 12:41 PM
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You can purchase the Life-Glo at Drs. Foster and Smith.

Aquarium Lighting: T-5 Fluorescent Bulbs: Hagen Fluval Life-GLO T-5 HO 6700K Bulb

Never too far from crazy


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post #14 of 15 Old 02-28-2013, 12:57 PM Thread Starter
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You can purchase the Life-Glo at Drs. Foster and Smith.

Aquarium Lighting: T-5 Fluorescent Bulbs: Hagen Fluval Life-GLO T-5 HO 6700K Bulb
T-8 and T-5 are different bulbs.

(Not sure which post yours was in response to but I Personally needed the T-8 Life-Glo.. which Drs. Foster and Smith carry as well.. BUT they do not carry the size I need :) )

Last edited by LadyKeiva; 02-28-2013 at 12:59 PM.
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post #15 of 15 Old 02-28-2013, 01:06 PM
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Originally Posted by LadyKeiva View Post
T-8 and T-5 are different bulbs.

(Not sure which post yours was in response to but I Personally needed the T-8 Life-Glo.. which Drs. Foster and Smith carry as well.. BUT they do not carry the size I need :) )
Sorry

Fluorescent Aquarium Lighting: Life-Glo 2 Fluorescent Light Bulbs

And you are right... they do not..
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Last edited by Freshcatch; 02-28-2013 at 01:07 PM. Reason: addition
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