Hello RIU I'VE JUST SETUP MY FIRST DWC DIY TOP FEED SYSTEM FOR 2X PLANTS.. Q1) does the hydroton have to stay wet at the top of the net pots? Q2) Is 30lpm of o2 enough for a 70L max res? Q3) is 300ppm OK for the first couple weeks after transplanting from root riot cubes into the system? Q4) I've built a DIY drip feed that is set for 5x feeds every 4 hour at a rate of 100ml per 1.5min =500ml per day ' I's this enough? Q5) plants are 9days from sprout do that look OK for 12days old?