Lighting Question

  1. Squirrelmanajh

    Squirrelmanajh Valued Member Member

    I have a 29g tank that I got for free that I believe is pretty old. I've been using it for almost a year now in addition to however long the previous owner had it. I know I need to replace my lights, but I'm not sure what the best two bulbs would be, or if I should even replace my lighting structure. I currently have a white bulb and a pinkish one, but idk their ratings or anything. What would be the best combination of two bulbs to get? I only currently have java moss and fern in the tank. Thanks!


    Ok I checked and the light fixture says "30 in twin tube reflector. 120 volt, 40 watt, 60hz" Is that good?
     
  2. f

    featherblue Well Known Member Member

    What type of fixture?

    Id go with 6500 for those plants.even light balance, but u may only need one depending on the fixture power for those guys
     
  3. OP
    OP
    Squirrelmanajh

    Squirrelmanajh Valued Member Member

    I'm not totally sure the type of fixture bc it's old and I'm not sure it even says it on there.
     
  4. c

    chevyguy8893 Well Known Member Member

    I would take a look at the bulbs to determine their type, it should be printed on the bulb along with individual bulb wattage. Given that you say it is pretty old, I am thinking it is probably a T8 bulb or possibly T12. Right now you are probably at low light which is fine for the plants you have, and there are other nice low light plants out there. So, if the fixture still works fine I would continue with it, unless you want to go with higher lighting. I would combine the suggested 6500K with a bulb that has more red (generally labeled as 5000K for aquarium bulbs).
     
  5. OP
    OP
    Squirrelmanajh

    Squirrelmanajh Valued Member Member

    So I checked the bulbs to see what kind they are and they are so old that the label has practically worn off to the point that I can't even read it!
     
  6. c

    chevyguy8893 Well Known Member Member

    Ah, I was afraid of that being a possibility. I would just measure the bulb diameter and compare it to the first chart in the link provided. I would also make note of the bulb length since it will generally be different than the fixture length, unless the 30" you listed was the tube length.
    http://en.wikipedia.org/wiki/Fluorescent-lamp_formats
     
  7. OP
    OP
    Squirrelmanajh

    Squirrelmanajh Valued Member Member

    ok, I measured and the bulbs are T8 and 24". I don't know their K rating, but you're saying that I should get a T5 6500K and a T5 5000K?
     
  8. c

    chevyguy8893 Well Known Member Member

    Yes, in my opinion that is a good combination. Judging by your description the white output bulb you have is probably somewhere around 6000K to 7000K (could possibly be higher), and the pink output bulb is probably somewhere in the 5000K-6000K range.

    As some example of bulbs (there may be options outside aquarium specific bulbs that I don't know of), but I don't have experience with these in T8, only T5HO for the ZooMed brand.
    Petco (5500K and 6500K)
    http://www.petco.com/product/111972/Zoo-Med-T-8-Flora-Sun-Max-Plant-Growth-Fluorescent-Bulb.aspx
    http://www.petco.com/product/111971/Zoo-Med-T-8-Ultra-Sun-Super-Daylight-Fluorescent-Bulb.aspx

    Petsmart
    http://www.petsmart.com/product/index.jsp?productId=11248157&lmdn=Brand&f=PAD/psNotAvailInUS/No
    http://www.petsmart.com/product/index.jsp?productId=11743614&lmdn=Brand&f=PAD/psNotAvailInUS/No

    Both of those brands are a little pricey, so you may be able to find something else online that fits just as well.