Help: Stalk skinnier on bottom than top

[90Gizmo]

Day 19: I'm pretty sure I've added dirt twice but at least once (CRS.) The right plant looks like it'll grow roots if given dirt. The left plant is farther into veg but still it's skinny on the bottom... Is there anything else I should do/add with the dirt? I increased the light several days ago was 200 PAR before, 350 since. I've given Cal-Mag 1-0-0 twice. I'm running out of room to add dirt so I hope next time is the last.

 

[cybersmib]

Not about that bass. Seriously I think your fine if you are referring to area where the new growth is emerging. Try tapping the sprouts when they pop if you wish to stimulate strengths

 

[Going2fast]

Completely normal.

 

[90Gizmo]

Thanks for that. But I'm not sure what you mean tapping the sprouts...