Rooted clones very pale green!

[Greenpassion]

I have a number of clones that I rooted successfully and planted in Solo cups. They've been in a Solo cups for over a week and their color is a much too pale green. I've been feeding them a week dose the last two waterings of Botanicare grow with a few drops of liquid Karma and a slight amount of Mammoth P. They don't seem to be Greening up at all. Does anyone know what's wrong here? The photo I've attached of course makes it look as though the Clones are good color but they're actually very pale. I really struggled to find some place in my house that would get the light the way it really is.

[Potted]

Cal- mag helps green up my girls. Lol

[Toker1]

Could be the mom was fed right after clones were taken. So wasn’t much nutrient left to sustain the foliage. Tiny roots have a tough time uptaking enough to sustain. If you think it won’t burn her, you can up the nute dosage, if you are not at the manufacturer’s recommended quite yet.

[Greenpassion]

Toker1, isn't their pale color a sign that they need Cal Mag?

[Toker1]

Not necessarily. Could be lacking nitrogen.
Check this out...

https://www.google.com/amp/s/www.growweedeasy.com/common-nutrient-problems%3famp

[Greenpassion]

But I thought the addition of cal-mag took care of a lack of nitrogen? If not how do I give them more nitrogen? My understanding is cal-mag is higher in nitrogen.