Solo cup root development?

[fatbuds420]

how long does a seedling take to reach the bottom of the cup with the main root? (from when it sprouts out of the soil)

just asking because i wanna try some watering techniques

 

[BubbleBucketz]

Doesn't take long at all....72 hours tops. The roots are what's usually growing faster then the tops at first.

 

[Dankman_420]

Plant in a clear solo so you can see root development. Put it in a red solo to block light. Slide it out to see clear. Works great for clones too