nutes problem?

well as you can see.. 2 problems, the little leaf is yellowing, and few leaves are curly as well as seen in the 1st pic, is this a nute problem?
they're getting biobizz grow at 1/4 strength from what the chart says.
that is swiss cheese that has a brother which is totally greenish and sexy and 3 more bob marley sativas that are amazingly beautiful, that one is like.. well, yellowing a bit and curly a bit, is this fine? too much nutes? too little of em?
any help would be much appreciated..

How long has this plant been growing for? If you're using a soil that comes packed with nutrients such as bio-bizz's all mix, its a good idea not to use any nutes at all for the first week or two. The soil already contains enough nutes to keep the plant healthy for at least a week, I usually leave it for two. Flush your soil thouroughly and wait for the soil to dry and then go back to using the minimum amount of nutes. Good luck.