Now that my first grow is finished, I'm preparing for my second grow. I'm gonna give hydroponics a try this time around. I'll be doing (4) 5-gallon top-feed DWC buckets; 8" lids, using hydroton as the medium. They'll be grown in my 39"x39"x78" tent. If all 6 seeds successfully sprout, I'll also have 2 of them in 3-gallon fabric pots full of leftover FFOF from my first grow. Here's everything I currently have to work with, minus the new pH pen that's on its way: Before I get started in the next week or two, here are a couple of questions I could definitely use some input on: 1) My CMH bulb is 3100K. Would that be decent to use for veg phase, or would the blurple COB LEDs (~250w) be the better choice for vegging? I don't have the spare cash to buy a more veg-friendly CMH bulb at the moment, so I'm just gonna run with what I have. 2) Having never dealt with rockwool before, I'm very interested in hearing suggestions of simple ways to start seeds in rockwool without any specialized equipment. Is it as simple as just sitting the cubes in a shallow tray and keeping a steady supply of water in it until roots come out? 3) Is there anything I don't that you'd consider pretty much ESSENTIAL to successfully grow with my chosen setup?