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6 week old plants. need to know whats causing this and if they can be revived or is this permanent damage?? :?

is it ok to use a 250 watt MH for seedlings and if so how far should i keep the bulb away from the seedlings when they sprout???

i have a tent 4 X 2 X 6 in feet with a 127 cfm exhaust two fans on the inside and a 250 watt MH and it still hits 82*F degreez in there. but i am confused cuz some say that 82 is fine and others say 82 is too high...... please help.

I have a tent 4ft by 2ft by 6ft with a MH 250 watt and a 120 cfm exhaust with a lil fan inside and the temperature still hits 82 degreez. is this temp ok or should i ad another fan?? PLEASE HELP!!!