Ive got 5 aprox 2 week old seedlings that have taken off well under a 2ft 4 bulb t5 fixture. Yesterday I set up my 400W MH in a cool tube and placed it aprox 12-16 inches away from the plants. I had a little bout with heat for a few hours that I fixed quickly, temps got and stayed around 83-87 for around 5 hours before I realized/permanently fixed the problem.

After 24 hours the two biggest seedlings look very droopy. Two of the smaller ones their top leaves are slightly curled up with a very slight yellowing on the edges. These plants were 1000% beautifully healthy until today.

Was it the excessive heat? Do I have the MH too close too soon? Im regreting not leaving the T5 in for another week or two because the plants were flourishing under them.

Any help is appreciated.
gimmesum Reviewed by gimmesum on . Two week old seedlings look bad after 24 hours under 400 watt MH. HELP Please Ive got 5 aprox 2 week old seedlings that have taken off well under a 2ft 4 bulb t5 fixture. Yesterday I set up my 400W MH in a cool tube and placed it aprox 12-16 inches away from the plants. I had a little bout with heat for a few hours that I fixed quickly, temps got and stayed around 83-87 for around 5 hours before I realized/permanently fixed the problem. After 24 hours the two biggest seedlings look very droopy. Two of the smaller ones their top leaves are slightly curled up with a Rating: 5