First grow should I switch to 12/12?

I'm doing an aero grow using FilthyFletch 30 minute 6 plant aero build.
I started with seeds 2 White Rhino 1 Dinafem Blue Hash. When the seeds hatched I put them in rockwool under fluorescent lights for 2 weeks. I then put them in 3 inch pots with hydroton in an 18 gallon roughneck and they've been growing the last 5 weeks. I have them in a 4X4 grow tent using a 600 watt light and they are now 13 inches tall. I've been using the Fox Farm schedule and had some problems with nute burn but they are looking good so far. Should I switch to 12/12 now or should I wait a little longer? I posted pictures of my plants here: https://www.rollitup.org/hydroponics-aeroponics/22362-30-minute-6-plant-aero-47.html#post3201689

i would switch. depends how tall u want ur plants.

switch to 12 12 when your plants are slightly less than half the size you want to harvest

also thats some fine lookin broad leaf

mad props

also thats some fine lookin broad leaf

mad props

Click to expand...

Thank you!! I'm keeping my fingers crossed and hope to make my first grow a successful 1.

nice looking plants. yea i'd def switch to 12/12 unless you wanted to take a couple clones and veg for another week. take a look at my First Grow. the pics are of week 3 of my nice plants.... i'll be posting new pics tmo of this week.. they're big. and i have 5 ladies budding(week 1 flower) its so exciting to see the bud forming. i've been waiting for something to go wrong lol.