What is wrong with them i have pics???

I njust got done using bushmaster for 3 days at 5 ml per gallon.
It did get to 95 degrees today thats the hottest it has gotten so far . I have two 4 inch ac ducts blowing cold air around the plants with very good ventilation. I flipped it to 12/12 today and took the bushmaster solution out.

A. no pic's
B. what's your question?

looks like a lil bit of nute burn, but if ya just put them into 12 and 12 that is probably got something to do with it and they will bounce back... Also this happens in the lower canopy I think. Just a suggestion but i would put the vent blowing cool air lower like below the plants and exhaust from the top where the heat is.. Very nice looking grow! rep

what u have is a phosphorous defishency what u need to do is get some feed that has a high level of phosphorous so try and get a feed that has got a 20 20 20 npk and take 20%off the recommended dose thats if u r in veg if u r in flower get something with a low nitrogen like 06 20 30 or anything close to that the most inportent thing is the ph if u r in vegie keep ph at 6 and in flower 5.2 to 5.8 this will help allot.hope everything goes well ...........garry