The Planted Tank Forum - View Profile: Hoppy

Hoppy Hoppy is offline

Planted Tank Guru

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Showing Visitor Messages 41 to 50 of 190
  1. hitmanx
    02-28-2014 01:39 AM - permalink
    thanks for the reply. in my case i want low light, and my tank dimensions are 13x13in surface area, so i currently have a 23w daylight in a 8.5in dome and the bulb does NOT stick out... in the mean time, based on your previous experiments, which chart should i be using?

    thanks again
  2. Hoppy
    02-27-2014 12:48 AM - permalink
    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.
  3. hitmanx
    02-26-2014 11:30 PM - permalink
    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.

  4. Hoppy
    02-17-2014 03:39 PM - permalink
    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.
  5. Designmejen
    02-17-2014 12:09 AM - permalink
    Thanks for the info. Do you think it'll be ok if I just run the 2-420/460 actinic lights?
  6. Hoppy
    02-16-2014 03:21 PM - permalink
    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.
  7. Designmejen
    02-16-2014 03:45 AM - permalink
    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.
  8. Hoppy
    01-13-2014 12:13 AM - permalink
    Casardo, I don't know how long T5HO bulbs remain effective. What I read suggests it is a year or longer.
  9. Casardo
    01-12-2014 11:37 PM - permalink
    Hey hoppy got a 48 " t5ho and I wanted to know how often to change the bulbs ?
  10. Hoppy
    01-10-2014 03:14 PM - permalink
    Based on the data in you probably have medium intensity light.

  About Me

  • About Hoppy
    Sacramento, CA
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  • Last Activity: Today 04:46 AM
  • Join Date: 12-23-2005
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01:32 AM - burr740 mentioned Hoppy in post Lighting an Aquarium with PAR instead of Watts
...hat one was made by Hoppy (thanks again man, i...


02:48 PM - Argus quoted Hoppy in post The Dangers of CFL lights
I regularly wear an alumin...
08:26 AM - Alyssa quoted Hoppy in post Sacramento Area LFS
That just demonstrates how...
09:39 PM - Argus quoted Hoppy in post DIY: Compact Florescent upgrade to LED
It is extremely hard to ju...
08:44 PM - Hoppy quoted donny in post The Dangers of CFL lights
There's actually a large b...
09:47 AM - Audionut quoted Hoppy in post baking soda KH question
It does not buffer against...
07:10 PM - Hoppy quoted AWolf in post How To Test CO2
The responses so far have ...
09:43 PM - Hoppy quoted i4x4nMore in post PAR Data-Spiral Power Saver Bulbs, lighting question
jraculya,If you can track down...
09:37 PM - Hoppy quoted Mytkobun in post Sacramento Area LFS
Stopped by the other day at J...
01:59 PM - Maryland Guppy quoted Hoppy in post How To Test CO2
I think it is best to just...
04:31 AM - Hoppy quoted jraculya in post PAR Data-Spiral Power Saver Bulbs, lighting question
Thank you for the quick respo...
04:15 AM - Hoppy quoted Sergeant Dude in post Water changes. How is filling your tank with a hose possible without death to Fish?
Chloramine isn't nearly as toxic a...
11:57 PM - Argus quoted Hoppy in post Top off water
Has anyone ever run into p...
11:30 PM - quiquik quoted Hoppy in post Top off water
...ersely affected. No Hoppy I have not had any p...

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