Plants are very tiny, help please! *Pics added*

From what I have learned so far, I would not change soil since you started with MG, (MG user here also) Rather get them into the 3" pot now...I started in 1 gallon to give them alittle more room from foundation...I probley with start with a 5 + gallon from start next grow round with the entire grow...Idk just like to leave them be for what I would like to accomplish from grow, only prefference. Make sure they have the proper feeding for your setup, they will do great!.... =)

Well I don't really want to feed them much because of the nutrients/fertilizer already in the MG soil. I did transplant them into their final containers today, so we'll see if that makes any difference. There were roots all the way to the edges of both cups.

Mine are growing slow too. Transplanting helped a lot. Wish the plant would grow as fast as the roots because they're already busting out of their "final" pots. :/
Post new pics in a couple days, I bet they'll be a lot bigger.

i got the same problem with my early pearl some time ago, It is because the pH level in my soil was too high 7.5 . but now all is ok cuz now iam using soil with 6.0 pH

I think I am going to go get some FFOF soil tonight and just transplant them while they are still small. All I can think is that MG soil is messing it all up.

yeah dude gl

Well, it's been 10 days since I made this post. I ended up transplanting them into their final pots and changing the soil to FFOF. I could not believe the difference in just the first couple days. 1 plant is much further ahead than the other but they are both doing great. Gave them their first dose of Grow Big 2 nights ago and they are doing great. I will update with pictures later tonight when I get home. It's amazing what a bigger pot and some GOOD soil will do. They are staying super short and starting to bush out which is fine with me because I don't have a lot of height to work with. Going to start LST soon.