diffenent growth speeds

Help! One of my two plants is growing alot slower than the other! They are both in an autopot system so they share the same reservoir and therefore are getting the same nutrients. Both are growing in perlite and both are looking really healthy. The slower plant when is was young went slightly yellowy for about a week but looks healthy now and that was several weeks ago. it is growing just very slow while the other is thiving. Could this have damaged the roots? Any help would be awesome.

Diffrtrnt strains often grow differently. Also there are different "phenos" within a strain which will grow differently. Thats one of the biggest downfalls of growing multiple plants from seeds. Clones guarantee you get identical growth w/ multiple plants.

Pretty sure they are the same strain. (afghans?) They started off the same speed till there were a few inches tall and one went slightly deficient of something. Which i dont get because they are getting the same nutrients by sharing the same reservoir but only one went deficient. But then recovered without me changing anything.

Like I said within the same strain, each seed can exhibit different traits, even if they recieve they exact same nutes, ect.

So you think the early deficiency was irrelevant?

The stress the one plant endured obviously made it fall behind,which is very normal and strains will have a variety of phenotypes that will have different growth rates and different needs