Rule #1 for growing indoors is controlling your environment to the best of your ability. That goes for temperature, relative humidity, proper exchange of air in and out your grow space and movement of air over your plants to prevent moisture build up and to strengthen the plant. I have made many mistakes as a grower and 90% of them have been related to not keeping these factors in check. When talking to novice growers the first thing I recommend is getting everything set up to grow and then just run the space empty for a few days (or weeks if you can) so you can see what your baselines are with all the equipment running. This will give a better idea of what it will take to keep your space within optimal parameters. I've been growing for years but recently tried hydroponics for the first time and I spent months talking to people who are good at it and trying to dial my new setup in before a plant got anywhere near it. I still made some mistakes, but I was much better prepared to deal with them because I knew what to expect out of my space in terms of temp and humidity management. Allowed me to focus on getting to know a style of growing that was new to me without battling unrelated factors.
