Mother Plant Showing Pre-Flowers

I have a Blueberry mother plant that I have been cloning for about 3-4 months. I keep her under 2 warm-white and 2 daylight 23-watt CFLs, and feed her FoxFarm nutes at half-strength. Approx. 5 days ago her leaves began yellowing and her stalks started getting getting purple veins. I gave her a little Cal-Mag, and a couple drops of Hormex in her water 2 days ago , and though the yellowing/purpling hasn't gotten worse, it hasn't gotten better either. What is really perplexing me is that this morning she has pre-flowers! She is on the same timer as my veg chamber, and under very similar lighting; She gets the same nutes, only at half-strength, and temperature and humidity are the same as all my plants, 75 degrees, 50% humidity. None of the clones in veg are pre-flowering and my OG mother, who shares the chamber with her is healthy and vibrant, and not flowering. I am baffled. Any help would be appreciated.

Different plants absorb nutes and use them faster than others, she may need a bit more nutes?

I dont think the preflowers will be a problem, she isn't flowering so its nothing to worry about. Im sure most plants show signs of pre flowering, correct me if im wrong.

regards
sold

Some of my plants are definitely more pre-flowery than others.

DJ Short's Blueberry was for sure. And now that she's in flower, that sucker is WAY faster than anything else in the room ... which I'm okay with

the purple could be a phosphorus deficiency.
What's your soils PH? your Ph might be low locking it out.
You've been in the same soil for 3-4 months.
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Well, Im going to give her a good leaching and see if that helps. Now that you mention it, it DOES sound like nutrient lock. This IS DJ Shorts BB, so its comforting to hear that she is quick to pre-flower. Thanks for the advice everyone.

The preflowers are just a sign of maturity in the plant. As long as she is under the proper length of light she won't flower but yes you should see preflowers on her, this is just normal biology in the plant.
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