What did I do to kill these plants?

[Slowpuffer]

Yes, it sux this close. my normal lights on temp is 23-25 deg c. about 5 deg cooler off. but yes there was a huge temp spike, heat wave. and temp was 29-31+ lights on. no air conditioning where tent is. I do not do any spraying/misting of any kind.

If your temps were never higher than 31C, then I doubt it was caused by heat, as long as you had good air circulation? looks like light burn to me.

 

[canadalarry]

is this light lacking a dimmer ?


dimming the light at the wall receptacle thru current control will not work.

if that is what you are intending.

led drivers do not work that way. the drivers themselves can be built for external dimming. otherwise it is preset. some preset drivers can be adjusted. messing with the amount of current supplied to the driver itself raises the potential for hazardous events.

be safe.

I was talking driver dimmer...but how to consistently control where I have set requires knowing how much draw I have.