plant yellowing and red?!

This is my 1st indoor grow, i grew outdoors a few years ago didnt really do alot for it watered, fert etc so im coming accross some problems.

my plant is about 20inches tall pretty bushy and in flowering stage atm, i took a photo of it 2days ago it was healthy and green.

I checked it today and its gone a very pale green and yellow on the leaves and red down the 'branch' to the stem, the stem is healthy.. . heres a few pics of my plant from the other day, i'll get some new pics done over the weekend if theres no improvement

any ideas thanks.

Nutes?

Medium?

Need more info to assess.

appears in decent shape, i wouldnt worry unless it gets much worse.

the red stems: these occur all the time in reds/purples and is totally benign, caused by one of many causes. its a pretty standard occurance i think.

the leaves: like i said, they dont look too badly off, and can probably be fixed with minimal change to feedings. yellow is most likely caused by too little nitrogen in the diet, or possibly a slight pH issue.

solution: tell us the pH and nutrients, and consider upping the nitrogen concentrations very slightly to see what happens (wait for a second opinion tho)

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Originally Posted by hybridlove420

the red stems: these occur all the time in reds/purples and is totally benign, caused by one of many causes. its a pretty standard occurance i think.

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I think it can mean a number of different things.. it may be a common thing for a lot of people, but i assure it's not normal.

Can mean sulfur deficiency, but appears as a 'normal' petiole color in some lines. I think the leaves look a little on the pale side, though, and would do a soil runoff pH test to rule out lockouts as a cause, and flush and start feeding with a complete cannabis specific veg fert if you haven't been.

i think purple stems are similar to purple leaves, except much more common. its probably cased by any number of things including temp, strain, nutrients, etc.

thanks for the insight i'll check out the ph and other bits for ya to get the best diagnosis and some more pics for ya.

cheers guys.

ok heres my plant again took some more photos of it last night maybe this might help you diagnose whats wrong, i need to get ph testing gear and other things to get the other info u want i'll get by end of the weekend hopefull, also would hard water affect anything?

That's an easy one.
It is WAY too big for its pot and there is no way to feed it properly with a height:root mass ratio like that.
Put it in a 3-5 gallon container with good, fresh soil and good drainage.
Give it a good feeding of bloom fertilizer. I would also give it a SMALL dose of well-diluted fish emulsion just for a one-time SMALL nitrogen boost, since it is yellowing too early.
that is a plant that is showing plain HUNGER with classic symptoms, but is otherwise healthy.

definitely bigger pot, id agree.

great looking plant though! wait another 3-4 weeks, and itll start looking delicious!

thanks for help guys appreciate it alot :thumbsup: get this sorted asap!