help whats wrong please

the leaves on my plant mostly on top are going bit funny im a newbie to this the edges are curling over and in photos to show its a super ice gratefruit

Over feeding maybe, lockout?

But I don't know shit.

Looks like you have some heat stress going on a bit there not too sure.... what are they under hows the temps any ventilation ?

600w yes there is ventilation i thought it could be heat my self the temp is about 29 30c its a cupboard 1.1 by 1.1 i have superice gratefruit and big bang 2 its the icegratefruit thats doing it i will post picture later of set. top of plant is is about 14 inch under light but not directly under light big bang under light icegratefruit to the side due to how tall it is 59in on standard ruller my pot 44cm down and across. in all pot and plant is the hight of a standard frunt door from top of plant to the cealing the space is about 20in and that for light thats why it to the side if gratefruit was under light tip of plant wood be about 3 in from bolb that why it to side tip about 20 in i need photo but they sleeping

too hot............

....heat stress would curl the edges upward, imo...
...my first guess would be a high pH.

i doubt 81F would do that to the leaves alone, but may be part of the picture. knock it down a few degrees somehow, and see what that does

high ph you say what would i need to do to correct it

Light stress ! my does that last week and raised light better . add some slica it help fight cold and heat .

wish i could raise light

tested my run of water it was light yellow worked it out to be 6 to 6.5 befor it went in it was 7 thats cool isnt it

apart from what ive said about are these heathy

I would say, because of the "eagle talon" look of some of the leaves that you have nitrogen toxicity. Your nitrogen should be very low at this stage of the grow. Even if you don't have enough your plant will tell you and you can fix it easier. With it being too high you will have to flush and start feedings with very low N. I had this problem with multiple grows due to not having the means to get the correct soil and having to use the pre-ferted MG moisture control. Its good through veg but once you hit flower the nitrogen becomes to high and just like clockwork, week 3 hits and the leaves start to claw downwards. I guarantee that is what your problem is. Once you have high N in flower it starts to acidify your soil and lock out other nutrients, so you will start having red and brown spots showing up on your leaves everywhere and the tops will start to burn. Overall they look good, but I guarantee if you don't get that under control in 2 weeks they will be much much worse. Good luck and I hope this helped some.

i took ya advice and flushed through 3 times the amount of water the pot holds am i right to say its when the water starts going clear your right about little brown spots there is some on the big leaves