Okay, your plants are FLOWERING. They need to be on a perfect 12 on/12 off light cycle, with NO interruption to their sleep, no matter how tempting it is to stick your head in at 'night'.

They should actually be VERY close to the lights- with tube flouros, about 2" is correct.

They have been slightly overfertilized, which is why they have crispy tips.

They also look to be both overwatered and sitting in acidic soil, as you can tell by the magnesium lockout going on onthe lower leaves. You will want to water only when the pots feel a bit light, and if you have a good drill, add some 1/2" holes even in the sides of the pot to help the soil dry out faster. I'm familiar with the type of pot that has that built-in tray under, and it's a real drainage problem! Blech.

Your mission if you choose to accept it is to find a hydro shop and grab a $7 bottle of liquid pH indicator and a small bottle of pH up. There's a new link in my sig all about soil pH correction, and you will want to test your runoff pH. That looks like a peat-based soil with maybe some bark chips in there? ACID CITY!

When you have enough posts, and you already might be able to, when you hit the 'post reply' button in the bottom LH corner of the last post, you can scroll down to the 'manage attachments' option and it will prompt you to upload pics from a drive on your computer.

Good luck, keep us posted. Those plants will be just fine.