Hi. I've been using them and they seem to work pretty good. However, I can't really compare them to what a grow light would do since I've never owned one. The
plants/
seedlings seem to like them though. The
seedlings actually lean more towards the bulb light than they do the sunlight coming through the window. That tells me that they definetly like the light coming from the bulb.
I'm also a cheapo and can't stand spending more money than I have to. What I've found to work well, take up very little space and not look bad either are the outdoor light sockets. You have to use an extension for the bulbs or they won't make contact but I just wire tie them to my
plant shelf. I need to pick up a couple more today so if you're interested: I'll post a couple pictures so you can see what I'm talking about.
tc