Since some of you have reached out for tips, I figured I'd rather post some of my best practices here for everyone to access.
Over the years I've had some really bad grows and some grows that I'm really proud of. The biggest difference has been RECORD KEEPING. I'd scream that from the rooftops if it would help anyone else with their growrooms. Keep track of what you're doing! We're human, and we forget things sometimes. When you take notes to look back on, it can help prevent issues and can help keep track of things that were successful/unsuccessful.
I also keep a laminated copy of my nutrient feedchart so that it's always easily accessible. I really like the GH feedchart because it gives a target PPM and EC. It has saved me in the past when I've accidentally overdosed prior to transferring in to my reservoir.
Buy good meters -- especially if you're growing hydroponically. Read the instructions and KEEP YOUR METERS CALIBRATED.
Most importantly, have fun and keep an open mind. Don't over baby your plants. It's a weed, it'll grow if you give it room and time to do so.
Keep it green!