Here is a pic of my mother plants, they are ready to give cuttings for the new season.
This is a simple wooden box that I made and painted it white with water based paint.
I have two 14W LEDS (4000K) and one 15W CFL (2700K) as lumination (this is low power consumption but very effective to keep mom's over the winter)
I set the timer 15h on to keep them in vegative state when they are in their 0,5L pots.
They get Alga Grow as feeding and I cut the roots back 2x in the winter period and add fresh soil as explained in this thread.
They receive haircuts as often as needed, always have 2 mom's of a strain.
Once I want cuttings, I prune the roots a last time and put them in 3L pots with fresh soil and put the timer 18h on.
After 2 weeks I can take 6-8 cuts of each mom. After that I cull the moms and keep the box to root the cuts.
As adviced by Shanti I always keep a cut of each mom and put these outside in the sun during summer to rejuvenate and to make cuttings for new moms to keep in the winter period.
Air flow in the box is passive, there is an opening at the base and at the top. No fans.
This is a simple, cost effective method for the hobby grower to keep genetics alive. I do this for over a decade now.
In the picture you can see 2 SSH mom's on the left and right back is Skywalker Haze and right front is Western Winds.
They were transplanted 11 days ago in 3L pots, cuts will be made over the weekend.
Hope it helps somebody! Feel free to ask questions.
Greetings.