Hi, apologies for the late response to your questions. You may no longer need the information but basically I run the pump 24/7, the mist generator was on for 10mins every hour in the early stages as the plant mass was low and it tended to dry out a little more. As time passed and water was retained I have now reduced to only 5 mins every hour. Water did build up on the bottom and I would drain every week, however now with only 5 mins every hour and only once during the night I don’t have to drain at all.
I think if your system is now furnished you may find that the water build up is less as the plants will utilise some.
Cheerio