Leafs are looking yellow brown and kindof droopy

So my leaves are looking a bit brown and droopy. On one plant, only some of the leaves have turned brown individually. On my other plant, the bottom leaves have turned yellow and brown starting at the bottom of the plant and going up. Some of the leaves have a slight discoloration around the edges. One leaf has a suspicious looking white spot on it. I was giving them what i though was a very low conc. of nutrients, but have stopped giving them nutrients after they turned brown. Now i am flushing with distilled water and keeping the temp low by turning off the HPS and leaving the 4 cfl and the 4 ft flourescent on them for now. any ideas what might be the problem and any suggestions on how to fix/prevent it?

what kind of soil and ferts you using
it could be a ph problem locking out some nutes .
what is your ph,,
also google mj plant abuse., 2nd from the top
good reading and referrence for later

Im using miracle grow moisture control soil with peat moss. Also using a 24-8-16 miracle grow fertilizer diluted 1 tbsp in 1 gallon water.

dont know my ph actually. my temp was staying around 80-85 kindof on the high side.

that mg fert it is some harsh stuff it is not too good for mj
the ratio is not good triple 20 would be better
is thier any fert in soil mix..
you have flushed 3 water to 1 soil
that fert directions are for full sunlight
what kind of light you got
do you ph your water

it could be wrong ph causin a definency in somethin
and burn with the other nutesheat will be a bit of problem as well

i use miracle grow fert for veg...i only use about 1/2 tblsp to 1 gallon of water...no problem at all...i say flush it real good and cut your nute in half and see if she gets better..

8 cfls mostly 100 watt equivalent. One 4 foot flourescent i recently put in, and a 70 watt HPS that I turned off today because i think the heat was getting to them.