I was looking at these CF bulbs on eBay and they are really cheep compared to other web sites. I was wondering if anyone knew if they were acceptable quality.
My main concern is if I buy one, I may not notice a difference in light but maybe my plants will. I have no way to measure that these bulbs actually are what they say they are. full spectrum, 6500k, last a long time, etc. without a graph how should I know if most of the light from these bulbs might be unusable to plants. my tank only has one bulb so I am looking for an optimized bulb for my plants.
My better judgment tells me to go buy the coralife bulb from the LFS, I get a discount there. Even with the discount I can get two bulbs on eBay shipped for about 5 dollars cheaper than one bulb at the LFS.