great plant!! but the leaves are turing yellow with lil brown spots on them i

the leaves are turing yellow with lil brown spots on them. then it started to go to the next plant i was spraying water with a lil bit of epson salt dilution to the plant i have since stoped but it still has not arrested the problom? any help please?

so where are they going yellow from? bottom up or top of plant or what, this is important because it will tell whats wrong, the bottom leaves going yellow is a nitrogen deffiency where as if the whole plant is going yellow it can possibly be a ph problem or a salt buildup thats locking out lots of nutes......which is what im guessing, i would stop the epsom salt spraying and flush with half strength solution ph'd to 6.5 or so for soil and them wait a few days to see if it works, dont expext to see the brown spots clear up as thats usually dead tissue and wont recover

thanks bro ya well it all started at the bottom of the plant and slowley worked its way up i belive i stoped the prob it was the epson salt but i will deff try what you had said thanks