DWC - Learn about running sterile or with beneficial bacteria. Decide whats for you. Be ready to buy a chiller if your nutes won't stay cool as most don't.
I'd use Calcium Hypochlorite (pool shock) it's cheaper than Hydroguard and is an additional source of Calcium. These plants like their Ca. I use tap water that runs 200-250 PPM and I still need additional Ca.No hydrogaurd just base nutes and cal-mag no-one mentions if you use ro water you need cal-mag. Trial and error
What did u grow from themStill growing think it's starting to bud it's starting to smell now. I'm liking that!
What seeds?From seed. Their still not done so much for thirteen weeks