My first grow also. I’m using 3 of the TSW 2000’s.I just went with the manufacturer recommended heights but kept my lights on 100%. Haven’t had any issues with the lights themselves. My plants are growing Great. Indica at over 4’. And still stretching. They seem to be fairly affordable. Compared to most. I ran 2 TSW’s 18/6 and it was around $40 dollar on my bill. Thought is was gonna be more so I was relieved. Grabbed the 3rd one a week ago since I started flower. Also remember to keep the box and contents if you need to return for repairs/ refund or exchange. I’m happy with my purchases and have nothing bad to say about the lights. Their sturdy for how light in weight they are. Nice construction, easy to set up. Definitely good for a budget. Plus they grow my buds. Not sure what else I could ask for.
