you can over fert it too
it could be needing a flushing from salts biulding up
it could be getting root bound
not enough water
or too much

i suggest go organic,(natural fertilizers,they are hard to give too much of since it will only take what it needs ,naturally
you can buy bags of cow manure mix half and half to soil and it wont need anything but water,most people screw up with ferts trying to rush to big huge buds,
natural is best safest way till you know what your doing.
good luck hope it turns out for you
NowhereMan Reviewed by NowhereMan on . Half yellow, half green plant? Ok, someone help me out here, I've been offered suggestions but neither of them seem to work, my plant is slowly losing its fan leaves, I'd say one a day, smaller ones are appearing all over the plant, but the big ones are dying. I've been told to fert more and it could possibly be a MG deficency. So, I ferted more (hadn't ferted in a week) and added some epsom salt, with no good signs so far, anyone else got any ideas? Rating: 5