Light set up, give advice

I have a 100w Hps light (all I could afford) and right now my plants are looking good, about 2 1/2 weeks in...

I was just wondering what are some good cheap lights that I could add to this set up? The Hps is hanging, so I was thinking about getting some lights that just stand up...

But I need to know which kinds of bulbs would actually work well for this

Thanks

Well first of all HPS is great for flowering so I'd get something higher in the light spectrum. Cfl's are a great option, they're cheap, they don't use much electricity, and they don't produce very much heat. If you go to Wal-Mart by the light bulbs you'll see a white package with blue on the border that is made by GE and says 6500K vertically on the left front side, these lights are 23 watts, put out 1600 lumens each, are the part of the light spectrum you need, and cost less than $5 for two. Hope this helps.

check out my grow...
https://www.rollitup.org/grow-journals/51756-lowryder-2-cfl-s-my.html