I have two babies under HPS. One of them the leaves on the plant are starting to fold upwards, it makes them look like little green taco shells. Can someone tell me what this means? At first i thought it might be MG deficiency, I added some but doesn't seem to be helping. Thanks... B

its getting to hot in there hows ur ventilation ? the heat is causing the leaves to fold upwards

I was starting to think that. I think my HPS has been just too close to them. How high should I put it?

Sorry about the crappy pic. You would think a freaking 500 dollar phone would do better. But no, Thanks Sprint

Here we GO! A picture thats NOT crap!

So okay, i placed my light based on someone telling me that if it was too hot for my hand then it was too hot for the plant. So I put it about 6in above. Now that we have figured out that is obviously WAY too close how far away should my HPS be?

no man now that i see thje pics it's doesnt seem like ur description said that the leaves were folding upwards. looks like some deffeiency

So anyone know what particular deficiency this is?

They don't seem to have any deficiency, the leaves folding upward is usually indicative or either heat stress or a Magnesium deficiency (the leaves are said to be 'praying' for magnesium), the leaves folding up is probably from extra heat from the light being too close.

A 250w light needs to be about 8" away
A 400w light needs to be about 12" away
A 600w light needs to be about 18" away
A 1000w light needs to be about 24" away

Those are just guidelines, if it doesn't burn your plant at that distance move it a little closer, the closer the better and the more bud you'll get.

thats funny look ath the pics they look droopy not folding upwards!