Purple stem is nitrogen deficiency, and the yellow can also be nitrogen. Weird thing is you are in soil, and these issues arent a normal occurence. I advise a flush and some bat guano.
RockyMtnDezL Reviewed by RockyMtnDezL on . need advice asap!!!! HI guys im on my first big grow and im having a couple newbie questions lol.... And of course im having some trouble....im using a 1000w hps bulb with the 1000w lumatek digital ballast i have a fan to circulate air and theres fresh air access.... Id like to know why the stems are turniing purple from the middle up and spreading to all the branches.... and the leaves are yellowing and drooping down...here are some pics...... Rating: 5