Purple seedlings with pictures;

dimebag87

Well-Known Member
Hi! I posted about this problem a few days days ago but I have pictures now so hopefully it might help a bit more. These are 7 days old today. Apart from the purple they are still putting out roots and putting on new leaf growth. My temps drop no lower than 22/23 at lights off and 26 at lights on. I gave them the stated dosage (off the bottle) of canna start which as a formula for seedlings. I'm starting to think it's a Ph issue with the rockwool. I soaked for 12 hours or so in 5.5 ph so maybe I should of give them a longer soak. I'm honestly not sure. Another opinion would be great :)Thanks, Db
 

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ta mate. hopefully they will grow out of it. over all would you say they look ok apart from the funky purple hues
 
ta mate. hopefully they will grow out of it. over all would you say they look ok apart from the funky purple hues

even cold temps shouldnt turn a newly hatched seedling purple so ... intrigued to see what others have to say on it.
other than that ya looks fine.
 
defo not feeding them until next week. its a haze so i dont think they need anything at this point from what ive read.
 
I think i had heard something about P deficiency. The cold temperature can cause a lockout of P which is why it turns the plant purple. They are young, but they are in rockwool so i suppose a deficiency could happen.
 
I think i had heard something about P deficiency. The cold temperature can cause a lockout of P which is why it turns the plant purple. They are young, but they are in rockwool so i suppose a deficiency could happen.


yeh. i dont think im going to use it next time. had trouble with it on my last grow.
 
I think i had heard something about P deficiency. The cold temperature can cause a lockout of P which is why it turns the plant purple. They are young, but they are in rockwool so i suppose a deficiency could happen.

Growing in soil for the years that i have.. i have never known a 7 day old plant even need the amount of nutrients that would cause defiancy's this young in the life cycle.
Whats the deal with rockwool then?
 
Growing in soil for the years that i have.. i have never known a 7 day old plant even need the amount of nutrients that would cause defiancy's this young in the life cycle.
Whats the deal with rockwool then?
I don't think rockwool has alot of nutrients..
 
you cant take em out now. all is that happens next is the whole block then goes into a pot of clay pebbles with a dripper.
 
I'm a soil guy so I'm not super knowledgeable with this stuff, but i think that you are supposed to soak the rockwool cubes in a light nutrient solution.
 
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