Cola Color??? w/ Pic

To start I'm fairly new to growing and I have recently started a small micro cabinet CFL and CocoCoir /w perlite. Growing a female bubblelious, I FIMed the plant when it started growing it's 4th node because it was already a very short and thick to start with and also LST. During the veg phase (5 weeks from seed) everything went perfect, nice and healthy. Now i have switched to 12/12 with Four 45W 2700k CFLs about 2 inches away from the top canopy. About 4 days into flowering the colas started turning bright yellow with a slight pink tint.

My question is...am a complete noob and this is normal??? B/c to me I dont feel nutes could be the problem considering how healthy everything else looks??? I'm running CannaCoco A & B w/ Cal-Mag. I water the coco with nutes, then PH'd water, back to back like that. Im very consistent with PH and Im running the nutes with about 700PPM when I started flowering cycle.

Would greatly appreciate the time and knowledge from you all,

Thanks

You need to ALWAYS water them with FULL strength nutrient solution(what ever full strength is for you, not by what the bottle says). You should never never never give coco plain ph'd water. Even if you absolutely have to flush, which I wouldn't do unless you have some severe problem, you should use 1/4 strength solution.

Water everyday until you get a nice amount of run-off-whether the pots are light or not!

COCO is not soil-no wet/dry cycles. Water everyday with full strength nutes until you get run-off and your problems will be solved!

that's normal at the start of flower. tops go into rapid growth mode and will be lighter than the rest of the foliage.

Thank you for the feedback! About the nutes Squidbilly, the reason I was watering with nutes then water then nutes was because I was told salts will build up in the coco, but now that I sit and think about it...that wouldnt be a problem b/c I PH my water right before it hits the coco every single time. I will try that squidbilly, dont you still flush with plain PHd water right before harvest tho??