Help with my grow - White Indica

[lifehacker]

Hi all.. this is my second grow.,, it is White Indica I bought from Amsterdam... this is now week 4 of veg. I use 18/6 hour light schedule.. is this normal to have yellowish leaves? When I can start flowering (12/12) ? Am I doing something wrong here?

I use LED VIPARSPECTRA light (all reviews recommended using this brand/type..

Your help/advice would be really helpful.. Thanks!

 

[Newbill10]

It's a small plant in a large plastic pot. Are you sure it's not to wet? Is the pot heavy? Wait until it's light in weight to water. I like to keep pot size small until it's growing well, than transplant up. How much perlite, I like to see more up to 33% by volume, the roots may not have air.