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Hoppy Hoppy is offline

Planted Tank Guru

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Showing Visitor Messages 41 to 50 of 189
  1. Hoppy
    02-27-2014 12:48 AM
    When there was big disagreement about how much PAR one of those bulbs would give, there were 3-4 of us making measurements, and making various errors in doing so. Plus, we found that a bigger CFL bulb that would stick out of the dome reflector would give significantly less PAR, and we were mostly using 8.5 inch domes, not 10 inch ones. With the 10 inch dome the bulb doesn't stick out, as I recall, but with the 8.5 inch one it does. I haven't revisited that subject since then, but I have planned to do so sometime.
  2. hitmanx
    02-26-2014 11:30 PM
    Referencing this post:

    Maybe you can shed some light (pun intended) on my problem with fluorescent bulbs and dome reflectors.

    Data from several sources seem to contradict each other, maybe I'm just not reading it right.

  3. Hoppy
    02-17-2014 03:39 PM
    You would be providing a very limited lighting spectrum if you use just the actinic bulbs. Plants do use that light, but they need more than that, as far as spectrum is concerned. And, most people find a planted tank with just actinic lights looks very weird, spooky, and lacking in colors.
  4. Designmejen
    02-17-2014 12:09 AM
    Thanks for the info. Do you think it'll be ok if I just run the 2-420/460 actinic lights?
  5. Hoppy
    02-16-2014 03:21 PM
    Any 4 bulb T5HO light is likely to be too much light for a 20 gallon tank. But, the Aquaticlife lights also have good reflectors, so with all 4 bulbs on you should have about 150 PAR at the substrate. There is no way to get enough CO2 in the water to fill the plant's needs to grow at the rate that much light demands. That is certain to lead to big algae problems. Even with 2 bulbs you will have to be very careful to get enough CO2, enough oxygen in the water, and good enough maintenance to be able to avoid algae problems.
  6. Designmejen
    02-16-2014 03:45 AM
    Hi Hoppy. I have a Aquatic Life t5 HO 4 lamp lighting system on a 20gal high tank, and I wanted to know if you have any suggestions on timing my light system.
  7. Hoppy
    01-13-2014 12:13 AM
    Casardo, I don't know how long T5HO bulbs remain effective. What I read suggests it is a year or longer.
  8. Casardo
    01-12-2014 11:37 PM
    Hey hoppy got a 48 " t5ho and I wanted to know how often to change the bulbs ?
  9. Hoppy
    01-10-2014 03:14 PM
    Based on the data in you probably have medium intensity light.
  10. Tasakiou
    01-10-2014 01:51 AM
    Hi Hoppy! I just need some clarification on my lighting! What type of lighting level for plants would you call this ? Two T8s, 36 watts , 17 inch high tank (Luminaire sitting 2" Above tank, Glossy white paint at the back of the bulb), 30" length , 14" width. 4"substrate at the back 2" at the front?

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  • About Hoppy
    Sacramento, CA
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  • Last Activity: Yesterday 05:41 PM
  • Join Date: 12-23-2005
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