Growing on inside window shelf. NEED TIPS AND OPINIONS.

So i am new in growing and i would to ask u for some tips and opinions about my two plants. I planted first plant(left plant on picture) about a month ago and the second one(right) 10 days later. I noticed that the leaves on the bottom of left plant started to turn yellow color(don't know why). Today i replanted them in bigger cups. I started to water it with mixture of water and organic fertilizer. also i would like to know if ventilation is neccesary? Pls leave opinion and tips




LEFT PLANT (30 DAYS OLD)


RIGHT PLANT( 20 DAYS OLD)

Next time you transplant bury the main stem to up to the first set of leaves. These are really stretchy and would not need those tooth picks if you did so.

If the stem is still bendy you can curl it gently into the transplant hole.

thanks. should i chop off those two yellow leaves? did they become yellow cuz i overwater it? i was watering it every second day, is that too much?

I wouldn't use any nutes right now

why not