recurrant leaf problem, help!

i have had a recurrant problem over my past 3 grows. older leaves start turning brown, or developing white or rust colored spots before the leave and respectful branch die off, turning brown, limp, and lifeless before i have to pluck it off.

any help would make me happy

Question to vague.. Are you hydro or soil? You gotta break it down more than people can help you. Goodluck !

Pictures would be best

yeah i know. when i was doin my hydro i got white leaf tips, which im pretty sure was nitrogen deficiency.

but other than that, 3 times on my soil plants have almost all the lower leaf sets died in veg, it keeps the top 3 or so nodes of leaves but when a new node opens up the lowest one starts to develop spots and die. happens indoor and out. not a major problem, but wtf?

if your doing everything correctly and its still showing signs, it could very well be the strain your working with. it is surely not unheard of, i seen crap genetics before.....hope you figure it out and happy growing!

i figured thats what it was. i mean, im really not doing anything wrong and the plant is unaffected, i guess its just a pet peeve ha ha.

thanks