thanks for the advice, , i cant drill holes in the container, its the wrong type of plastic and shatters, thats why i tied a wire around the rim and hooked from there. i dont really want to change pot type. they are 5ltr, and because they are narrow and long i can squash more plants closer together earlier on. unless i see a better pot cheap i will have to stick to these, although i do need to get a 15ltr one for the ogre seeds i have.
as for heat, i dont have a thermometer, but it really should not be too hot, i dont need it to be stealth so the cabinet front is open all the time with a fan blowing over the bulbs and out of the open door. infact, i havnt fitted a fan to 1/2 of the cabinet and just have a massive desk fan blowing in. it really shouldnt be too hot. are you sure thats what it is? is there not another cause ?
your plant looks pretty impressive, i think next time i will try to tie each branch out like you have, rather than just bending the main stem. having said that, this strain is very short and stocky. a friend grew some under hps and they stayed about 30-40cm in height without training so i should be ok. . . (+for the next grow i am setting up a small tent with a 250w cfl that will only be used for a few weeks at the end of the grow when they no longer fit in the existing cabinet.
thanks for the help, im going to do a bit of research on that saw toothing thing and see if their could be another cause, they were sprayed with a heavy chemical fungicide yesterday so maybe that might be the cause.