Hey I need some real advise

[StChristopher]

I got two Big bangs from green house seeds their about 15 days form breaking the ground.

Their in 2 gal pots in readygro coco
using csn17 grow at .6ec-300ppm(.5)
Silica Blast
liquid karma
Aqua Shield
Fulvex

Temp at canopy 77f
Hum 55
600 watt HPS at 36" over

most of my blades are cupping up to the point the side tips are almost touching. My ph is 5.8-5.7. Leaves look good no sign of nute burn.

Looked thru many threads and come up with ph bad...but mine is right on at least 5.8 is what I was told for coco.
Light to close.... 3" to close???
Temp is to hot....77f is to hot?????
Mg makes them cup...hit them with mist of Epson salt and looks like more are cupping.

No I cant post a pic yes I know it would help but dont have the ability atm to take pic.

Any ideas how to stop the cupping?????

 

[TaNg]

The only time of had that is when my lights were to close,there still really young so lift your light see if it works. Peace.

 

[Hugo]

Have you noticed them to span out during the dark cycle? If so it's related with lights and temp.

 

[StChristopher]

Hate to say havnt checked them with lights out. But I'm kinda of thinking its heat issue. I seen a grow log pic from some one that looked just like mine and he was having heat issues also both reply's mention lights/heat so I'm looking in to this.

Thanks 4 taking the time to help