Yeah that's a poor way to look at it. Ppfd if how ya go. A 600w led will put out a shit ton more than a 600w MH. That article is garbage... Sorry just calling it the truth bro. There is a lot of bad info out there
Well yes effectively. But the gains start before that. Even at 600-800 ppfd an increase to 600-700ppm CO2 shows an increase in growth but again at what point it becomes economical is I guess very debatable.
30w sq ft. Will give you a good amount of light. Are you using quantum boards? The new 301h are the most efficient. Meaning most ppfd output per watt. I mean the term ppfd isnt always used correct you can watch this vid to help you understand. Now you can increase the ppfd just by moving the light closer making the photons more dense. Typical measurements are over 1m2 so that all light are compared equally but by moving the light closer and making the footprint smaller you increase the ppfd at the cost of coverage and vice versa.
So to make it simple. Say the 240 w has a ppfd of 600. And the 120w say 300 for simple terms. That is the photon flux density over 1m2. But you are not using it in a 1m sq space. So you can end up with the same ppfd on the 120w as you get on the 240w. It will just cover a smaller space in order to achieve it.
I'm the kind like Tim Taylor "moaaar power" haha. Yeah that will do you. I feel the light is the most important part of a grow but it takes all factors to be successful. And to much can make for heat issues. If your planning on possibly upgrading your space then I would go 240w especially since you can just dim it down and they are even more efficient when you do so. Not make it break it but hey little bits add up. In a 2x2 space I would only do 1 plant tbh
I want to buy another one now lol. Stuff 2 in to one 3x3.
Haha true. But mounting that many bulbs would be a pain in the ass
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