Hmm maybe you can answer a couple questions I have
How often do you water with the nutrient solution? Is it like water water feed, or water feed water feed?
Do you only PH the water that the nutrients are in?
does the PH fluctuate a lot? I know In DWC it's easier to keep the ph consistent with the correct water temp and correct nutrient content for the plant growing.
What is the best line of nutrients to use? My only worries are cost of the synthetic shit I have to buy but can't skip out on quality
Ok im not saying this is the definitive way to run coco, there are peeople who do things very differently to me and they get amazing results but the way i do things is
i feed them once a day up to about week 3 (to make the roots work)then twice a day. When they are in bloom i feed them 4 or 5 times only when lights are on. all automated for me. I always run things in a smaller sack/pot then u may think is advisable, this helps me to facilitate multiple waterings. I never flush until the end, i just try and keep my e.c low throughout. u shouldn't get salt build up in coco, especially with multiple waterings daily.
i only P.h the reservoir that is feeding my plants. i try not to go above 1.4 e.c at max feed. using this method i can get 20+ from an 8 litre sack. However some people who i know use really big sacks and feed once every 2 days and they also get great results, i prefer this method i outlined because I'm getting the correct ph and fresh oxygen to the root zone 4 times a day.
as far as nutes go I'm not sure what u guys have over there but i use the same nutes used to use in dwc. Oh and i add beneficials to the coco and 40% of my medium is perlite or super soil aerator mixed with the coco
