In this case, I would not either. I will just trust the manufactures when they say that T5 and T5H are not interchangeable lamps.

Well I don't know about anybody else but I'm still confused. I have never been able to comprehend all this about grow lights but yet I grow over a hundred different house plants in one room with 100% artificial lights ranging from plumerias to phalaenopsis two cactuses all have different light needs. I usually lose a couple during the winter but for the most part I'm pretty successful. Someday I hope to get this light thing figured out.

Heath, I think you do have it figured out plenty well. Your plants aren't suffering noticeably from the light you give them. I assume they flower about as much as you expect they would.

Problem solved!

Or, maybe if someone could propose the 2-3 most likely shortcomings of random light choices, you could set up some experiment to test whether your plants do detectably better after those (imagined?) shortcomings are rectified.

Or take away something and see if any plants get noticeably worse.

I think it is easy to show that most plants have some minimum brightness they need to grow optimally (and maybe during the winter, they need less brightness because they need to grow slower anyway). Take away the brightness, the plants grow slower and maybe etiolate (inter-node stretch = "legginess").

But spectrum? From what I read, the flowering phase is more likely to care about spectrum, so that might be the way to test what is insufficient.

Thanks Rick
What I have is an outside storage building that I put all my plants in in the winter time it's got two aquarium fluorescent lights with plant aquarium light bulbs. I've also got a 65 watt plant flood light. And the picture is a 5 light fixture with every other light bulb being a 50-watt incandescent blue plant light and a compact fluorescent light. Set to stay on for 14 hours a day
Thought I had more pictures but that is all I got it only shows half of the building.

I LIKE the "plant chandelier"!

Thanks it was free. I just had to put a plug in it.