Tube query

Discussion in 'Lighting' started by LondonDragon, 29 Oct 2008.

  1. LondonDragon

    LondonDragon Administrator Staff Member

    Messages:
    10,289
    Location:
    London
    Just need to place an order for new tubes and just want to get the right ones this time.

    What are the differences between:

    24 Watt High Output FHO

    24 Watt High Output HO

    24 Watt High Output FQ

    and which are right for planted tanks???

    thanks
     
  2. JamesC

    JamesC Member

    Messages:
    1,276
    Location:
    Bexley, Kent
    First two are the same:
    HO - High Output
    FHO - Fluorescent High Output

    FQ I've never heard of. Where did you get it from?

    James
     
  3. LondonDragon

    LondonDragon Administrator Staff Member

    Messages:
    10,289
    Location:
    London
    Thanks James, I got it from lampspecs daylight section.
     
  4. JamesC

    JamesC Member

    Messages:
    1,276
    Location:
    Bexley, Kent
    Not sure TBH. Never paid much notice to it before. Think it may be just the way Osram code their tubes. I'm just interested in the Kelvin and colour rendition values.

    James
     
  5. Steve Smith

    Steve Smith Member

    Messages:
    4,428
    Location:
    Leamington Spa, UK.
    I just bought two 24w Sylvanias and two Philips from that section. Couldn't tell you what they're like though as I don't have my luminaire yet :(

    Lampspecs certainly shipped quickly though! Cheap postage too (on items under 3ft) - £2.95 postage on 4 24w tubes and a PC tube.
     
  6. GreenNeedle

    GreenNeedle Member

    Messages:
    2,706
    Location:
    Lincoln UK
    Its probably something like where the American sellers call all T8 tubes VHO (very high output. lol) They are the same W per inch as the english ones which don't say VHO.

    AC
     
  7. LondonDragon

    LondonDragon Administrator Staff Member

    Messages:
    10,289
    Location:
    London
    Thanks guys, I need to buy 6 tubes for my Rio, I was thinking most Daylight tubes 65k, can I used all the same or its best to mix them with different kelvin??? thanks
     
  8. JamesM

    JamesM Member

    Messages:
    1,913
    Location:
    The BIG End, South Wales
    The daylight 6500k bulbs I find a little too green by themselves, and the Skywhite 8800k bulbs are a little too white for my liking... so I used 1 of each and get just the right colour rendition :)
     
  9. JamesC

    JamesC Member

    Messages:
    1,276
    Location:
    Bexley, Kent
    I'll second that. I find 6,500k tubes too green just by themselves. 865's are very green. 965's are a bit better. With that many tubes I'd mix and match with some 4,000k and grolux. Grolux's really bring out the colours in fish like cardinals.

    James
     
  10. Mark Evans

    Mark Evans Expert

    Messages:
    6,492
    Location:
    newark notts.
    i find my 8800 make cardinals look beautiful, real vivid.

    ive got 4 in my 120 luminaire as of 2 days ago.
     
  11. GreenNeedle

    GreenNeedle Member

    Messages:
    2,706
    Location:
    Lincoln UK
    I did these pics a while back similar to JamesCs test but I had a white background which really shows the differences.

    This is my 4500K on its own:
    specfront.jpg

    This is my 6500K on its own:
    dayfront.jpg

    And this is the 2 together:
    bothfront.jpg

    AC
     
  12. LondonDragon

    LondonDragon Administrator Staff Member

    Messages:
    10,289
    Location:
    London
    Thanks for the photos Andy, going to study that and also James photos and see what suits me best.
    I think I might mix 3 & 3 or 2 & 2 & 2!! still to decided! choices choices....
     

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