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Hoppy Hoppy is online now

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Showing Visitor Messages 131 to 140 of 178
  1. Doc7
    06-29-2011 02:22 PM
    The feline situation has convinced me to re-look at the whole picture here and after reviewing many of your comments in the past again, now I am back to thinking about a T5NO, 2 bulb wide-spread setup in a canopy. then I don't need to mess with anything between the lights and water and there will be defense against the cat going in which is win win.

    I have a 2 bulb T5NO already on my 20 gallon High (16 inch height, 12 inches wide) and it certainly doesn't seem too bright to me although I have no PAR meter. It is a coralife which has mixed reflector reviews. I am struggling to convince myself that the same number of bulbs, but spread out 8 inches from one another in a bigger fixture, will provide good lighting for growth. Does that bring me to the equivalent of 1 T5NO for most substrate areas?
  2. Hoppy
    06-28-2011 03:31 PM
    I have never tested the use of "egg crate" versus light intensity. Intuitively I think it will reduce the PAR about 30-50%, even directly under the light, and more further away from the center of the light, but that is largely a guess. (A spot directly under the light gets light from a pretty long length of the bulbs, but the "egg crate" stops the light from much of that length, which should reduce the PAR directly under the bulb.) I doubt that there is much, if any difference between 10" and 11" wide fixtures.
  3. Doc7
    06-28-2011 01:42 PM
    [FONT=Arial]I can get a 2 x T5HO custom Catalina fixture in either 10” or 11” wide (which must be used for their 3/4/6 bulb units) for a comparable price to the Hagen GLO etc fixtures and less than 50% of the price of getting a 4 bulb fixture (TEK etc) and not using 2 of the bulbs. This seems like a great way to increase the spread over an 18” wide 40-breeder tank.

    A recent change; I will be using egg crate over the tank to prevent feline intrusion. I understand that egg crate re-directs stray light with an increase in PAR directly beneath the bulbs yet a decrease in PAR as horizontal distance from the bulb grows. Do you think 2 bulbs in either 10” or 11” fixture, will be able to be raised to an “optimal” height such that I had the relatively even low-to-moderate light you recommend w/ CO2 dosing/EI? See any reason to use 10” vs 11”?

    Thanks much for all the help you provide.
  4. Hoppy
    06-17-2011 01:39 AM
    I have various photos of tanks I have had, and setups I have had, but my 3 tanks now are all in a state of need for a lot of loving care. I get preoccupied with my projects and neglect them. And, in a few months I hope to be moving, where I may not be able to have any tanks, which dampens my current enthusiasm.
  5. amberskye
    06-17-2011 12:41 AM
    ..passing through ...
  6. amberskye
    06-02-2011 11:37 PM
    have you any photos of your planted tanks?
  7. Hoppy
    05-30-2011 09:03 PM
    Near the point where the fish are unhappy, not at that point. The lower the light level, the more leeway you have for having less than maximum CO2.
  8. amberskye
    05-30-2011 08:29 PM
    hope u dont mind me jumping in...but carpeting plants need CO2 to the point where fish are unhappy? oh my. No I cant do that, so goodbye carpet.
  9. Hoppy
    05-11-2011 03:11 AM
    PAR meters measure the actual available light, usable by the plants, where ever they are used. If you have 50 mms of PAR, it doesn't matter where it came from or how it got there, it is still 50 mms of PAR, equally good for plants.

    Carpeting plants need CO2 much more than they need high light. You need to get the CO2 ppm in the water up near the point where the fish are very unhappy, then even with low light you can grow carpeting plants.
  10. Doc7
    05-11-2011 02:28 AM
    I plan on raising it. I may even get the TEK 4 bulb fixture - that way, no matter what I do in my future, I don't need to worry about purchasing an additional fixture (could do a reef tank with this fixture). I will also be able to utilize the front and back bulb placement for the widest light spread over the tank. I will be hanging the light so I can do any distance above the tank necessary.

    Can a light be too bright when directly above tank, but when PAR is reduced by raising it a foot more-or-less, the light quality is diffused such that it is no longer good for plant growth particularly carpeting?

    I guess part of what I am asking is all PAR equal and thus you can't have a light that is "too bright" when close and "not good enough" when suspended higher from tank, at least when talking about Hagen GLO and the TEK fixtures?

    sorry i ask really winded questions...

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    Sacramento, CA
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