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Hoppy Hoppy is offline

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Showing Visitor Messages 41 to 50 of 193
  1. Hoppy
    02-28-2014 03:18 PM - permalink
    I used the data from i4x4nMore, which I plotted on log-log graph paper to make extrapolating easier. I suggest starting with the light at the top of the tank, but being ready to raise it a couple of inches if necessary. I stopped making PAR meters, from boredom. I'm still looking into the possibilities of using the process described in to make more of them, with less boredom.
  2. hitmanx
    02-28-2014 12:12 PM - permalink
    Sorry, I don't mean to to be a pest, but I'm trying figure out how high to hang the light to achieve upper low light par. At what height do you think it would be 40par? Which one of your charts did you use to get get to that answer? Can I assume the lower numbers chart you made and the one i4x4nMore or more realistic? I just need a ball park so I have somewhere to start from and tweak... are still selling par meters?
  3. Hoppy
    02-28-2014 03:51 AM - permalink
    I think you will get around 40-45 PAR, which is low medium light.
  4. 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
  5. 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.
  6. 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.

  7. 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.
  8. 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?
  9. 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.
  10. 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.

  About Me

  • About Hoppy
    Sacramento, CA
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  • Last Activity: 05-01-2016 04:39 PM
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02:04 AM - Audionut mentioned Hoppy in post Wrapping my head around KH and co2. Led light questions! Look!
... Minor correction Hoppy. That would be Bica...
12:39 AM - Audionut mentioned Hoppy in post CO2, pH, and dKH question observation from Hoppy. The last paragraph...
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...


05:27 PM - Hoppy quoted tanksalot in post BBA w/ press. CO2 tank
Brian727: Thanks, but I'd like...
11:32 PM - Iwagumist quoted Hoppy in post Are these LED bright enough?
That CFL bulb may be enoug...
07:55 PM - jeffkrol quoted Hoppy in post Are these LED bright enough?
That CFL bulb may be enoug...
02:30 AM - Hoppy quoted Willcooper in post Help with Planted Tank Set Up
Not saying your wrong but that ...
09:55 PM - Hoppy quoted s_s in post A secret to preventing algae
No surprise to me that y...
04:27 AM - Hoppy quoted Kareen in post Is 66 par good
Would 2x36' led's with 66pa...
02:38 AM - Hoppy quoted ApogeeInstruments in post A Better PAR Meter
Hi guys. Chris here, from Apogee. I ha...
02:31 AM - Hoppy quoted Diana in post Cause of algae?
Diatoms are high in silica...
11:54 PM - Zhylis quoted Hoppy in post A secret to preventing algae
11:32 PM - Hoppy quoted Zhylis in post A secret to preventing algae
As far as I can tell, Tetra...
11:14 PM - Zhylis quoted Hoppy in post A secret to preventing algae
For some reason Tetra Algu...
10:25 PM - alcimedes quoted Hoppy in post A secret to preventing algae
It has never been demonstr...
08:39 PM - Hoppy quoted Nordic in post A secret to preventing algae
Tetra's algumin product use...
07:20 PM - Hoppy quoted Fissure in post Another deficiency/toxicity story
...right now the "toxicity c...
06:36 PM - Hoppy quoted s_s in post A secret to preventing algae
For the most part, algae...
07:41 PM - discuspaul quoted Hoppy in post Water changes- how often?
I have done changes from 1...
03:52 PM - Edward quoted Hoppy in post Water changes- how often?
Is this something you hav...
03:31 PM - Hoppy quoted Unlimited16 in post Total Noob to CO2, need help!
As for the gauge, it hovers arou...
08:32 PM - SpaceLord quoted Hoppy in post Fish keep swimming in circles, something is wrong with him. Any ideas?
Do you use Prime or a simi...
08:08 PM - isonychia quoted Hoppy in post Can low light for algae control affect plant health and promote algae
It doesn't look like the c...

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