I use mylar coated walmart T12's for all my plants, including my cephs, helis etc etc
and I am very pleased with their growth rate and colour... more lumens and more expense doesnt always equal a better light, you best do your research into the physics of light and the needs of your plants, not what light has the greatest lumen rating or the coolest looking reflector
Carnivorous plant enthusiast
Don't eat me,... Mr. Flytrap
Av8tor, how do you attach the mylar to the reflector?
Originally Posted by Av8tor1
Elmer's brand spray craft glue... i start by cutting to approx size, then tape in a couple places on one side to start and spray as i lay it down..
and with the Elmer's, after a few months, it will release without a whole lot of effort if you want to replace the mylar... works very slick
my first few applications came out a little wrinkled, but now its a breeze to lay it down slick as can be
makes a big difference in fixture efficiency... just remember, half the bulb is pointed in the wrong direction
(and also the "Inverse Square Law for Light" tells us that applying mylar here will result in the single greatest gains in efficiency)
I use my same bulb combination in a dual 15" T5 fixture for my isolation terrarium... and it works great..
Where a lot of the problem comes from is this affection for the term Lumen... Lumens is a measurement of light intensity as perceived by the human eye not plants.
The Human eye is most sensitive to the green and yellow wavelengths of the visible light spectrum, whereas plants use mostly the red and blue wavelenghts... which is why most plants look green to us..
Since this is the case, Lumens can actually be considered a measurement of light energy that the plant cannot use
My 4' lights use a bulb that focuses its energy in these red and blue wavelengths, so it looks very dim to me and its lumen rating is only 1,350!
when the energy is not focused correctly or when a light puts tons of energy into the green and yellow because they know that people expect the light to be bright or they know the customer expects a high lumen rating then its like a shotgun compared to a sniper rifle, each will do the job.. but one can do it a whole lot more efficiently and with less electricity and heat generation
forget lumens, look for wattage and spectra and/or PAR... a million lumens wont grow a single plant if it is all in the wrong spectrum
say im crazy if you want, but look at my plants and tell me that my poor weak 1,350 lumen bulbs are starving them for light
its all basic physics and the law of conservation of energy
class dismissed, read the next chapter by tomorrow, test on friday... hehehehe
Ok Thanks for all that help...
The thing is I dont have any where to fit my 30 gallon tank, and hang the Shop lights. I'm not doing it from the celling for obvious reasons. And I'm not going to go build a frame for one 30 gallon tank to support the lights. I'm going off to college, and Ill need something that doesn't take up allot of space. (aka 4 shop lights).
The reason I made mention of those lights, is because Elgecko uses them and I know that it works for him. And AGAIN, if I have a 29 Gallon fish tank, that is 30in. long, Would the 30in lamp be the right size? Or whats the deal?
sorry for the tangent nep, my fault mate...
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I used them. They are fabulous. BUT I got an off brand to save cash, and it burned out and doesn't work anymore. It's in the basement right now. I was stupid and didn't research my purchase first and wasted money.
But while it did work, it was nice. Some of the lights can accept either a 50 (I think it's 50) OR a 65 watt lamp. Measure first because while mine would run a 65 watt lamp, the 65 watt lamp did not physically fit in the unit when I got it.
If you have an aquarium that is 30 inches long, it makes sense to get a light that is 30 inches long If you can afford a dual lamp fixture, get that.
that comes with the 65 watt light bulbs,
but it says its 31" long. That wont fit on my 30" Tank will it?
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I don't see 31 inches. I see 30 inches long, 2.5 inches tall, 7.25 inches wide. Even if it was 31 inches long, so what? Who cares about a half inch hanging off both sides.