Please explain. Tia for the help

OK so just brought plants from outside (long story but they had no option after having to travel in uhual for half a day. It perked them up actually.) So brought in and put under new mh 600w air cooled and 200 watt CFL temp was 79-81 humidity 50% placed 18inch away and my smaller weaker plants are responding well but my tallest strongest one had its top port of the colas maybe two node worth go limpish now they had other issues we where working thru but it got under the mh and just was like bam... Too much for it?

I gave foliar spray with little epaom salt and splash if seaweed. Hope it helps also placed back outside.

Anyone

Try moving the light higher. If the top part of your tallest plant is all that's effected, it might be picking up too much heat off the MH.

Okie thanks

It would be best if you could post a picture, that way we could help you better