My DWC system is this
I have been replacing the water once a week, mostly following this schedule
My veg is running long this time, but I basically progress through that as I think is fitting. I think the extended veg is mostly recovery from supercropping. A few branches snapped real good, but they all recovered, they just didnt really expand for a while afterwards.
I’ve been growing 2 plants in 1 of those tubs refilling with ph’ed RO water when the level drops. I have been using Botanicare CalMag, Hydroguard, and Silica Blast as well. Based on a post I saw on here, I was going to give a half dose of MOAB a week before flower, another half on flip and then from there we are back to winging it. lol