No worries. Those are like 140 watts power consumption and for $240 that’s three of them correct?
I’ll run the math on those numbers, but definitely correct me if I’m wrong. 9 zips is like 256 grams by 420 Watts is like .6 grams per watt. I think? I’m pretty impressed, that’s a good ratio for any light or grower. Nice job! Now in comparison, we’ll take @MAXHeadRoom’s grow. Just because I believe it’s well documented here, and I believe he’s an honest and realistic guy. He built a replica of hlg-550 ($1050 retail) for I’m pretty sure $600. On his very first grow dry yield was .75 per watt on 515 Watts I think. So 100 Watts more from wall, 130 extra grams. Assuming you had donors for the extra 130 grams, what could you get for it? At $5 a gram, you could build that light completely paid for in one grow.
Obviously there are other variables that contribute to yields. And what works for one isn’t always great for another. I just want to help people try to get the most for their money is all.