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Old 04-15-2013, 07:56 PM   #1
newb
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Low or High?


Hi all!

I have recently taken some interest in keeping aquarium plants and was hoping to keep it as low tech as possible, but I've been reading conflicting information regarding my current light fixture. I have a 28 gallon bowfront (24x15x18) that has been running for over a year with a t5HO 2x24 Watt fixture sitting directly on a glass canopy. I assumed I had around 1.7 wpg and considered it low light, but it seems this may not be the case?
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Old 04-15-2013, 07:58 PM   #2
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Originally Posted by newb View Post
Hi all!

I have recently taken some interest in keeping aquarium plants and was hoping to keep it as low tech as possible, but I've been reading conflicting information regarding my current light fixture. I have a 28 gallon bowfront (24x15x18) that has been running for over a year with a t5HO 2x24 Watt fixture sitting directly on a glass canopy. I assumed I had around 1.7 wpg and considered it low light, but it seems this may not be the case?
Depending on the quality of the fixture/bulbs/reflector, I would say that is somewhere in the medium/average.
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Old 04-15-2013, 07:59 PM   #3
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The WPG rule is way outdated since now we have CFL's, T5, T5HO, T8, etc.
Here's a great article to read more - Lighting an Aquarium with PAR instead of Watts

I would personally put your setup in the medium light range.
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Old 04-15-2013, 08:05 PM   #4
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It's made by Odyssea, but couldn't tell you much other than that. Was hoping to stick with low light, hardy plants that if possible can go without additional co2 or fertilizer. Can a tank still be low tech with medium lighting such as this? Thanks for the quick responses/feedback!
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Old 04-15-2013, 08:16 PM   #5
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Default Your Lighting Question

Quote:
Originally Posted by newb View Post
Hi all!

I have recently taken some interest in keeping aquarium plants and was hoping to keep it as low tech as possible, but I've been reading conflicting information regarding my current light fixture. I have a 28 gallon bowfront (24x15x18) that has been running for over a year with a t5HO 2x24 Watt fixture sitting directly on a glass canopy. I assumed I had around 1.7 wpg and considered it low light, but it seems this may not be the case?
Hello new...

The "watts per gallon rule" works with florescent bulbs that measure T8 or T12. If you do have 1.7 watts per gallon, then you have moderate to fairly strong light. The strong light level is about 2 watts per gallon of tank volume. Bright goes into the 3 to 4 watts range.

You should be able to grow most of the standard aquarium plants available at the local pet store.

B
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Old 04-16-2013, 01:49 AM   #6
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You probably have 60-70 PAR with that light, depending on how deep your substrate layer is. That is too much light to use without also using pressurized CO2. Raise the light so it is about 2 feet from the top of the substrate and you would have low light.
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Old 04-16-2013, 02:47 AM   #7
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Yikes...am I better off going with t8 then? I have one with a 15 W bulb...would only give me 1/2 wpg though. If it comes down to it, I think I'd rather pay to downgrade my lighting & stick with the basics.
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Old 04-16-2013, 02:52 AM   #8
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Just remember that you can't use t8's in your T5HO fixture.
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Old 04-16-2013, 03:01 AM   #9
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Just remember that you can't use t8's in your T5HO fixture.

Yes, thank you for that I should have worded that differently, I have a spare t8 light fixture with a 15 Watt bulb. Seems I'm either too low with the t8 or too high with the t5HO. Glad to find out sooner rather than later. Does anyone suggest an alternative? Again, thanks for everyone's input
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Old 04-16-2013, 03:14 AM   #10
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can the Odyssea run with only one bulb? if so only running one bulb would help. deff dont switch to the t8 unless you only have the lowest light plants.
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Old 04-16-2013, 03:25 AM   #11
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can the Odyssea run with only one bulb? if so only running one bulb would help. deff dont switch to the t8 unless you only have the lowest light plants.
Yes! I just tried that, it does. So I am now running a single 24 Watt HO bulb over a 28 gallon, where does this put me? I'm trying to avoid adding CO2 & additional fertilizer. Having never had a planted tank, I want to start simple and possibly work my way up in the future.
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Old 04-16-2013, 03:30 AM   #12
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Default T5 or T5HO

Hi All, I have a 125 planted tank I have T5's on it now and my plants seem to do ok or would the T5HO Be a better for the plants. Thanks
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Old 04-16-2013, 04:29 AM   #13
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Quote:
Originally Posted by newb View Post
Yes! I just tried that, it does. So I am now running a single 24 Watt HO bulb over a 28 gallon, where does this put me? I'm trying to avoid adding CO2 & additional fertilizer. Having never had a planted tank, I want to start simple and possibly work my way up in the future.
add some floating plants and you should be fine. floating plants will block a lot of light. get some pennywort or watersprite and float that.

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Hi All, I have a 125 planted tank I have T5's on it now and my plants seem to do ok or would the T5HO Be a better for the plants. Thanks
it would prob be best to start your own thread. you will get more responses toward your problems. i have 2 t5no on my 125 but im only growing low light plants, depends on a lot of factors.
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