2x10 gallon RDWC waterfall selection

aight:) so I cut 2 blue dreams, 2 criticals, and 2 Purple Kushs on the 1st of january. and another Purple Kush, 2 days later, cause I kind of crunched the stem of one previous cut clone.. but the 2 first cut Purples rooted first, to be exact, 2 days ago. (like expected, those are true survivors, but also not so heavy yielders... all the roots you can see on the pictures are the purples. really robust plant.. pretty normal time. first roots after 5-6 days is also what I get with easy plugs. the others also show these little nibs at the stem, so won't be long till they show roots. blue dreams 1/2 rooted, but not much yet, the criticals seem to take the longest. I added about 3ml 3% h2o2 to the aero cloner res, 3 days ago, and today again, the water volume should be around 5-6l in the tote. today I encountered some slime on the pe-tubes too.. And I added flower nutes, only about .2 EC 3 days ago. base EC was 0.4, and cut the fluoros in half, and added 70w of LED lights... today I took off the hood from the aero cloner... I kind of changed plans a bit, even though my rdwc volume is more fitted to 4 plants, and fitted to a 2x4 I will free up some space in my place so my area will be approx 1,4m x 1,8m, which is approx 4,6 x 6 feet, about 2.5 m², so about 3.5 times the previous grow... I plan on doing 3 plants per 10 gallon bucket, which is a bit small, but hey.. I am not gonna change anything bucket wise, I could use the res for the additional 2 plants, but then my pump will probably clog and it would be a hassle to top up the buckets and get my ph and stuff without lifting the plants up.. I just wanted to have the same amount of CC and Bluedream, even with only 2x4, so I changed to 6 plants instead of 4. and also more than trippling the grow area, it'll be a huge field with probably 3x the previous yield... everything below 1gpw would be a fail.. but I guess thats not a problem since my previous grow yielded pretty good without selected clones. I have a hps for this somewhere with a pretty fresh bulb, 600w, so I will use this, and my 400w LED, just can't resist that yield... I may move at some point, so this could be the last grow for a while.