Is Cinderella Sick? Dark spots and tips burned on seedling.

Female Seeds C99, sprouted 2/9 and placed under low watt daylight fluorescent, then moved under a 42-watt daylight when I finished my small tent. Grown in a coir/perlite hempy bucket (https://www.icmag.com/ic/showthread.php?t=93983). I fed it 1/4th strength maxibloom.

Taken today:


2/16


Growth definitely seems slower than the other two. This is my last seed, I really really want to grow this strain this grow.


By comparison, these grew in the same tent.

Vintage 2006 - Sprouted 2/7 around midnight

2/16


Northern Lights - Sprouted 2/8 around 10AM

Kind of look over water and the first one looks like its getting nute burned a bit.

Yeah, I'm thinking it might be nutes, it seems unlikely that the CFL burned it. I flushed the hempy bucket, so hopefully it'll be feeling better. Odd that 1/4th strength would burn it.

Oh no, actually, I think I had screwed up the math and given them full or half strength the first time.

Well, lesson learned.

They shouldnt need any nutes for a few weeks. then max 1.4 strength.

Well, coir doesn't have any nutrients, which is why I used them. I think the 2 week rule is generally for soil.

Ah, another thing, I'm reading that sativas tend to be more sensitive to nutes, and C99 is primarily sativa. Even as a seedling it seems to be showing its sativa genetics, with its leaf structure and height compared to the other two.

So, in order from liking less nutrients to more it's C99, Northern Lights, Vintage 2006. Hopefully this will help someone else.

You shouldn't be feeding until your first true leaves appear and the cotyledon start to die off......looks like nutrient lock out......at this point only water with cal mag (If using ro water) and hopefully she will bounce back.....