Gita,
Wow, that is quite a collection!
:iagree: With Greg, they do bloom better when they're a little pot bound. Plant food and light help a lot too. I usually use Dyna-Grow bloom or if I'm out of that Miracle Grow has a bloom formula that I'll use. I use a weaker strength than it says on the directions but I use it whenever I water.
Yours look like they are thriving under the lights so I bet you'll have blooms soon!