hey cr8z13, ever since we added the extra 23watt cfl, i just noticed that our plants leaves are withering/shriveled up. but they're still pretty green. im afraid this has caused a lot of damage to the plant. what should i do asap? i think it's either the lights may be too close to the plant, i put too much plant food in with the water, underwatering or it's too hot in that small space(there is no exhaust vent with the door closed). if you or anybody has any ideas please let me know asap!!
Wouldn't be a bad idea to adopt an "all of the above" strategy until your plant(s) recover.
1. Raise the light up, yeah. The plant in the last pic above is probably too small to benefit from the extra light right now anyway, so backing off wouldn't be a bad idea.
2. Stop giving it food. Not sure how old that little one is, but it should be at least a few weeks old before you start giving it nutes. I've seen some growers wait until a good month since the soil alone usually is enough to feed them when they're young.
3. What are your temps in the room like? Try and set up a thermometer at around the same level your plants are at. You're shooting for about 80 degrees with the lights on. At 90 degrees all growth ceases, however if your makeshift co2 generator is doing it's job, 90 degrees would be just fine.
I can't say for sure, but I think the problem is the plant food. Still, stay on top of the other issues I mentioned too just in case. Hopefully some other people here can offer you some more, or even better advice.
One last thing, have you been checking the PH of the water you're using, particularly after you add the plant food? If so, what is it?