Bubblegum gettng sick! Help?

Here are some shots of my bubblegum clones. They were being fed one teaspoon of fox farms grow big mixed with LQ Karma every watering. I noticed some marks on the upper leaves ive been feeding with regular water now. What is causing this?

could be a nitrogen defecency or possibly over nuting, but i'm no expert maybe they can help out

anyone else?

your plants look overwaterd.which is probably causing your discoloration.also what is the ph of your soil?make sure you are letting your buckets dry between waterings

They are not being overwatered, but when I water I make sure the ph is 6.5. I do not kno the ph of the soil. Thanks

anyone else? jesus i miss overgrow!

some but not all of my plants are like this yellowish color as well. I have been wondering what it is from, i thought maybe its just genetics at first becauseof the randomness of the coloration on some of my plants and not all. any help would be great... anyone??
Sof,

mate is it was nute overload u would notice it on the bottom leaves first , it could be a few things . use this link it should help u find out what the problem is .http://www.ganjagurus.com/overgrowfaq/index.html?
i think it might be ur PH , do u know what the ph of ur water is before u add the nutes and what is it after u add them , also how far is ur light away from the tops of the plants and what type of light is it ( it could be heat stress as well , do u know the temp of ur grow room ) , any way what i would tell u to do is to flush them if u know they are not over watered, use 3 times the amount of water to the size of ur pots or until the water runs clear . i hope this helps.
SH

sorry what i was tryinh yo say was flush them .( that last hit has blew my head abit

It looks like either a PH problem but I guess not) or a salt build up in the soil maybe. Give it a flush for a couple waterings. And see how things go.

Then again if the plants are getting better from being watered and fed it was most ikly just hungry. If you think it is hungry just keep feeding it. If it doesn't help flush. If you don't think it was being under fed. Then go ahead and flush.