There aint no cryin' in cannabis gardening...:jointsmile:

Ambient heat isn't an issue if there's proper ventilation. (within reason, lol) Heat from a 500 degree bulb will definatelly stress the plants though. Check my signature for a couple of tips for growing in the heat.

Start some new beans, and while you're waiting for them to pop, find-out what you did, or what happened...and fix the problem.

Does Ionic have an online feeding schedule? (Google has the answer)
Do you know your water ph?
Is this a soil grow?