1800w perpetual 9'×6' -hydro questions?

Ok so im starting my patients grow.... a soiless run to waste perpetual room with pro-mix hp&vermiculit using botanicare pro grow and bloom. (24 plants) total at all times.
I haven't built the grow room yet and in was wondering what size resivoir(s) to use and input on feeding schedule. ..trying to run perfect watering schedule to keep medium substrate perfectly ideal for vigorous growth without running a drop of nutrient solution to waste or back to system.... NON-PASSIVE....pumps and timers...2gl containers...flowering at about 8-10"......and should my mums be a seperate nutrient plan as the veggies or can they share a resivoir. ...
Thanks I would really appreciate any advice on these ideas I could get.

Lots of questions.
Your watering schedule will vary depending on a lot of factors.
Room temp
Size and stage of plants
Are the biggest factors.
The babies might only need one per day, where as the big girls might need several.
Also plan on separate res for momma, seeing as you will be upping your TDS as they grow.
All.of this said I have never done a drain to waste.
Only soil, aero and dwc/rdwc
But having 20+ years exp I can tell you it will be trial and error to figure a lot of those questions out

Cool thanks man, yeah this will my first drain to waste as well...im gonna set up tomorrow and run everything to get it all dialed in, gonna do sum water tests to figure out a good watering schedule. . I got 2 40gl reservoirs for veg and flower. ..and a 27gl for the moms..temps will not get above 76 when the lights are on. Room will be 9'×6' and about 7'1/2 tall..