I switched my seedlings to HPS prematurely. They have been under the HPS for four days. The HPS is 4' above the seedlings but I'm starting to see signs of heat/light stress the last couple days.

The soil medium has no nutes... just peat, verm., pearl.

My temp is running about 85f and humidity is 55%. I have a 10" fan blowing directly at the light from 2' away. Also, a 13" fan for exhaust, and a 16" fan to intake cool air, both in the door of a clothes closet I'm growing in. The only impact the fans are directly having on the seedlings is the very slightest indication of a breeze.

Watering has been monitored very closely... The soil in the tray pockets gets dry about every 24 hr, I water with a dropper until the first drop comes out the bottom.

Should I switch back to the fluoro's or weather this thing out? (seedlings are 2 1/2 weeks old)
stjr2k Reviewed by stjr2k on . I messed up, not terminal yet, need advice from experienced growers... I switched my seedlings to HPS prematurely. They have been under the HPS for four days. The HPS is 4' above the seedlings but I'm starting to see signs of heat/light stress the last couple days. The soil medium has no nutes... just peat, verm., pearl. My temp is running about 85f and humidity is 55%. I have a 10" fan blowing directly at the light from 2' away. Also, a 13" fan for exhaust, and a 16" fan to intake cool air, both in the door of a clothes closet I'm growing in. The only Rating: 5