Ahh! There’s the information! Weak sun would cause it to stretch and that could cause it to fall over, and I think someone else said damping off already too
I can’t see the picture but that’s very likely what happened now that you mention that. Do yourself a favor just keep them under the steady grow light, keep everything steady and constant that’s what these plants like !
Here is a thought. Is there any chance that the rapid rooters could have absorbed something while in storage ? You may have bought them new but just a thought. I’ve never had good luck with the peat things that swell up, same symptom as you. I just figured the ph of them was not good or something. I’m sure that I was doing something wrong cause others have good luck. (I’m far from a pro)
When using the rapid rooters you should soak them over night in pHed water, that way you won’t be wondering “was it my rapid rooter?”. I think damping off is your problem, as well as stretching from weak sunlight. They want good light even as a seedling, just not intense light when a seedling.
It’s why most people will keep seedlings under a T5 or CFLs, they give good light but it’s not intense at all so your lights can be very close to your seedlings, helping to avoid the stretch problem.
I have the bag of rapid rooters stored in a closed ziplock bag… Stored in a cabinet.
I’m wondering if that was a good idea, seeing how the rapid rooters are wet, and it being closed… maybe it’s molding?
I agree with treez on the rapid rooters, I think they’re great for clones but I don’t use them for seeds anymore, I didn’t have very good luck. I use a 50/50 perlite vermiculite mix in 2 inch pots
I also soak my rapid rooters in pH’ed water, but not overnight, just a few minutes, I’ll be using them tonight to take some clones from a super cheese and a skunk#1, I’ll soak them in my super-secret cloning mix LOL!
Edit: it’s a super secret mix only because I can’t remember exactly what I put in it the first time LOL