Cal/mag issue??

Hi guys. Just a quick question. Not new to growing but I do need some advice. FF happy frog soil. 2 weeks after seed pop. Temp/humidity looks fine. Only water when soil is dry. CFL lights. My concern are the leaves. Please see pictures below. I'm thinking cal mag issue?

What is the PH of water they are getting?

7.1 range so I don't think that's too bad for soil.

Whats with the mcdonalds straw?

SnaFuu said:

Whats with the mcdonalds straw?

Click to expand...

Just holding them stem up and after awhile, roots will grow out from the side because of the warm humidity.

I don't see a problem, other than that I'd migrate it to a larger pot, and bury most of that main stem.

Also, I'm thinking that the straw like that may lead to damping off (rot of the stem).

-spek

Slight mg def. Add epsom salt to your next feeding at a rate of 1/4 to 1/2 tsp per gallon.

BTW: 7.1 sounds a little high. I'd stay in the 6.4-6.6 range unless I was trying to pull an acidic soil higher.

spek9 said:

I don't see a problem, other than that I'd migrate it to a larger pot, and bury most of that main stem.

Also, I'm thinking that the straw like that may lead to damping off (rot of the stem).

-spek

Click to expand...

Thanks. I will transfer this weekend

az2000 said:

Slight mg def. Add epsom salt to your next feeding at a rate of 1/4 to 1/2 tsp per gallon.

BTW: 7.1 sounds a little high. I'd stay in the 6.4-6.6 range unless I was trying to pull an acidic soil higher.

Click to expand...

Thanks. I will add some cal/mag and bring that ph down a bit when I transfer this weekend.

Thanks for the help RIU members. Mod please close this thread. I'm not sure if I can delete my own thread? Thanks

Maybe it is the soil.

I picked up a quarter bag of fox farms ocean forest they had laying around when the shop was out of promix. Since then, I've used it for my clones and for one seed. The one from seed (afghani kush) looks pretty horrid, and has for most of its life.

It was transferred to a pot of promix HP two days ago and seems to be improving.

I'll start the next seed in a cup of promix and see what happens, but for now I am thinking that my seedling didn't like the fox farms soil. The pictures are of the seedling (unhealthy) and of a clone (healthy), both spent time in a dixie cup with ocean forest, but the clone was only in it for a week after the cloner while the seedling has been in it for a month. I'll keep using the ocean forest for my clones until it is gone, but I won't be filling a full pot with it or switching mediums any time soon.