Answer: It sounds like you really need to put those tomatoes into some very bright light. If you leave the plastic on while they are under lights or in a sunny window they will overheat, so you have to take it off. (Seedlings also need good air circulation or they may run into trouble with fungus, too.) Your peppers should sprout soon and the light won't hurt them at all as long as they are still kept moist and not allowed to dry out -- maintaining humidity is the main purpose of the cover. Good luck with your seedlings!
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