The Planted Tank Forum - View Profile: Hoppy

Hoppy Hoppy is offline

Planted Tank Guru

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Showing Visitor Messages 171 to 180 of 190
  1. Hoppy
    01-14-2011 12:27 AM - permalink
    Watts are irrelevant when determining how much light you will have. Instead, you need to consider what type of light you are using, T5HO, T5NO, T8, PC, etc, and how far the light will be from the substrate, where the intensity is the lowest. Within each type of light, the wattage just indicates how long the bulb is, thus, how long a tank it will light uniformly.
  2. night9eyes
    01-13-2011 08:41 PM - permalink
    My husband did have a question with the Coralife 2 bulb T5NO light, he was wondering if it's enough wattage for a 55 gallon tank. Here is the link you sent. . .thanks! Question was regarding an Amazon Biotope aquarium set-up.
  3. Hoppy
    01-03-2011 12:35 AM - permalink
    Two T5NO at 20 inches should be medium light.
  4. b 30g
    01-02-2011 02:02 PM - permalink
    b 30g
    could you tell me what light would this be considered 30 gallon tank 20 inches deep with 2 18 watt t5no sitting right ontop
  5. CichlidsinNFLD
    12-28-2010 02:44 PM - permalink
    Hi Hoppy, I am new to the forum and just posted a discussion for my planted 75 gallon, I have been having some problems with growth and was wondering if you would be able to take a look and provide me with some feedback on lighting? I hear you are the king of lighting planted tanks so any advice you can give me would be great!
  6. NanoDan
    03-13-2010 06:00 PM - permalink
    Hoppy, can you tell me when and where the SAPS meetings are? Thanks!
  7. three105
    02-01-2010 01:07 AM - permalink
    hey man, take a look at my new post under fertilizer section... could use some help.

    Thanks, Three
  8. CL
    12-23-2009 03:57 AM - permalink
    happy four year joining date tomorrow (was browsing through members and noticed you joined tomorrow four years ago lol)
  9. CL
    09-10-2009 10:56 PM - permalink
    Congrats on 5K!
  10. Hoppy
    07-24-2009 06:03 AM - permalink
    T5 means 5/8 inch diameter tube, T8 means 8/8 inch diameter tube, T12 means 12/8 diameter tube, etc. HO means high output. T5HO are 5/8 inch diameter tube fluorescent bulbs, which use a ballast that drives them at about 1.5 times the wattage as T5NO (normal output) bulbs. So, a 48 inch T5HO is a 54 watt bulb, but a 48 inch T5NO bulb is about 38 watts, as I recall. The HO bulbs are designed to be driven at the high wattage, and the ballasts for them are designed to baby them as they start up, so the higher power doesn't shorten their life.

    Power compacts, or what we usually refer to as PC bulbs, are the two parallel tube, but interconnected, usually 5/8 inch tube, fluorescents, that are operated at a lower wattage per foot of bulb than T5HO bulbs are. In the UK I think they refer to the spiral screw-in bulbs as power compacts but I'm not sure. PC bulbs, in our usage of the term, have 4 contacts on the plug-in end, either in a straight line, or arranged in a square pattern. But, as far as I know we use them with a single power wire to each pair of contacts, so I don't know why they have three contacts.

    That is most of what I know about them.


  About Me

  • About Hoppy
    Sacramento, CA
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  • Last Activity: 11-23-2015 02:09 AM
  • Join Date: 12-24-2005
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05:27 AM - Nick00Merlin mentioned Hoppy in post 125H Gallon First Time Live Plant Project (Lots Of Pictures)
...resting experience. Hoppy has a lot of good in...
12:32 PM - bassbuster23 mentioned Hoppy in post Will this work?
...ssing towards also, Hoppy. Do go ahead - it...
09:14 PM - thedood mentioned Hoppy in post Types of Metricide question. Thanks Hoppy and bassbuster23
03:04 AM - Audionut mentioned Hoppy in post Wrapping my head around KH and co2. Led light questions! Look!
... Minor correction Hoppy. That would be Bica...
01:39 AM - Audionut mentioned Hoppy in post CO2, pH, and dKH question observation from Hoppy. The last paragraph...
02:32 AM - burr740 mentioned Hoppy in post Lighting an Aquarium with PAR instead of Watts
...hat one was made by Hoppy (thanks again man, i...


10:43 PM - Hoppy quoted i4x4nMore in post PAR Data-Spiral Power Saver Bulbs, lighting question
jraculya,If you can track down...
10:37 PM - Hoppy quoted Mytkobun in post Sacramento Area LFS
Stopped by the other day at J...
02:59 PM - Maryland Guppy quoted Hoppy in post How To Test CO2
I think it is best to just...
05:31 AM - Hoppy quoted jraculya in post PAR Data-Spiral Power Saver Bulbs, lighting question
Thank you for the quick respo...
05:15 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...
12:57 AM - Argus quoted Hoppy in post Top off water
Has anyone ever run into p...
12:30 AM - quiquik quoted Hoppy in post Top off water
...ersely affected. No Hoppy I have not had any p...

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