Organic or Chemical to correct nute deficiency?

Hello,

I think I have a N deficiency as my lower leaves are starting to yellow. Is it better to remedy such a problem with organic foods such as blood meal or a chemical system such as this http://www.futuregarden.com/nutrition/ which I have on hand as well.

Thanks

i would go with fish emulsion,inexpensive and works great and can be found anywhere.will not burn like chemical nutes.

I think I would go with the Liquid Earth. It's got all those nutrients and blood meal is just straight nitrogen, plus it takes longer to break down. For me chemical is easier and easier to correct problems with.

Hope you get some big buds!