Only a few people figure this out. It is so common to do a search on t5's and find a fixture with bulb for $100. People are getting ripped off. But few people like you observe that the same quality and quantity can be had for a fifth of the price - and use the money to buy more fish! :o
If necessary, you can use a video camera or digitsl camera - two bulbs next to each other. The image will show difference in color (L) and intensity (lumens). There are youtube videos demonstrating this. After the first purchase but then we can share on line to demonstrate differences so others...
All you have to do is go to youtube and see what the 'growers' are using for mar-a-wana. Thousands of posts and praise for the CFL. I can get a wool sweater at fred meyers but family members will look down on me :evil: because the sweater has no "north face" emblem on it. Functionally, it...
Actually, your description is perfect. I can actually use that quantitatively to buy other types of lights by comparing your parameters. Once we find two different bulbs that produce similarly, THEN we can use wattage to tell us which is cheaper to run. :lol:
There is an effort by the light companies to increase the price of the 6500K bulbs. In fact some companies are holding back intentionally to cause increasing demand and thus profits. I went into two stores here recently and not one of them had 6500k bulbs anymore. The light packages have...
This is awesome description!!!
See my post from a second ago. 23w 6500K bulbs at Amazon for under $3 in a pack of 4. Use the amazon-search phrase I gave .
Do a search on Amazon. I lookjed last night. Use the Amazon search, for "CFL 6500k".
They had 4-pack 23w 6500k bulbs for less than $3 each with free shipping if the order was more than $20 (?).
Pbmax, I really appreciate our discussion here. While I tend to come across as a 'know-it-all' and offensive to some, I am learning things too in our discussion. Thank you.
I will give you some ground here. And so you are correct in one regard. In the old days we only had incandescent light bulbs. Only one technology. Because we were limited to that one technology (at least in the common household and aquarium hobby), we could LOOSELY ASSOCIATE watts to what we now...
MOST incandescent bulbs produce K values of 2000k (warm white light). But they do in fact go lower. K values under 1000k are infrared lights. You can buy them. So go ahead and try them over your shallow tank. The result will be death of the plant from heat. You can even go lower to a single K...
When Einstein first presented his theory of relativity, he was not well received and even ridiculed. We see this everywhere in the great minds of the past. Some of our greatest thinkers were actually killed for daring to express the truth of science in opposition to the 'political correctness'...
Chlorophyll is composed of a magnesium atom at its core. Atoms will emit light in a particular pattern of distinct wave lengths. In astronomy we can determine the elements of a star (or any light source) based on the unique signature of the light. At rest (not excited) atoms will absorb light in...