First time grow

I have two different hydro set ups. One using Miracle-Gro and the other is fox farms trio. Rockwhool as medium. My temp is staying around 75-80 rh is 50-55% My plants are really small i think compaired to what i have seen. Here are some pics. An tbese are just random seeds i got from different people. How do i tell if there indica or sativa

How old are they from sprout?

Them big ole fat leaves look(at the moment)like indica.
As for size,like Promethean said,need age for that.

How old are they? Less then 2 weeks I'd say they look fine.

Bout two an half weeks

This is them now bout 4 weeks from seed three of my plants two pic each

This im not sure what the fuck happened it got all droopy over night

Am i doing something wrong why are the plants not getting tall

are your roots healthy or you getting some slime growth ? seems as a root problem for me rockwool can get too damp and this attracts pathogens. there are 2 schools to resolve this, organic using teas and sterile using H2O2 in the rez.

what are u usingin the rez to prevent bad pathogens ?

Nothing i am changing out water once a week. An waash res. While doing that i have a seperate res that i run plan h2o2 throu for about 12 hr.i have pump on a 30 min run 30 min stop.

What do you suggest. This is my first time ever trying to grow