Scrog attempt #1!

Here are the ladies on 3 days short of 3 weeks. I had a mistype last week on height, they are this week on about 12 cm...nodes are very packed which i do not normally get with my main light in big tent. 2 observations : 1) Node spacing was better than expected, scrog net is still about 40 cm up. I attribute this to my spare light which i was not using for a while. Shows me that my main light in big tent needs a replacement soon. 2) I think my mix is rich enough so i will try skipping grow nutes, one more week with Bio Roots then 2 weeks water only and off to bloom nutes directly. I feel like things are about to get serious in the next couple of weeks, exciting days ahead! What do you guys think for day 18?