Yield per square meter

Don't trust anything they say, lol... it's at best a best-case-scenario description and at worst utter bullshit purely to get people to click "buy." ambient co2, 540g is a good target. Method matters a little bit but as long as canopy properly fills the space, it mostly depends on your light. Not ever getting there without enough light. That is 50g/sq foot for the americans, liberians and whatever people from myanmar are called, lol. Some people measure from their taint on this stuff. I don't include larf weight and shoot for 1.5g/w. While my lights are not the most efficient on the market, they are in the top few percentile at 2.8-2.9umol/J. This metric is heavily influenced by the efficacy of the light used. Lower efficacy lights should shoot for proportionately less grams/watt. if you have ~900 umol/s of well-distributed light per m^2, a well-distrubuted and filled canopy, and at least a loosely controlled environment, it should be attainable with ambient co2. Some housholds vary in how much co2. that 900 umol/s is for a 12/12 cycle. Adjust proportionally for autoflower light cycle. More hours needs proportionately less umol/s. 18h would be 2/3rds, or 600 umol/s for 1m^2 for ~39 DLI. 39DLI being the ballpark "max" for typical CO2 in an indoor garden's atmosphere. I'm going on memory, so whatever ppfd and hours combo = 38.9. you are in a m^2, so the ppfd is the umol/s target of light without a need to convert.

Absolutely advertising BS. Perfect grower, perfect everything........you might ghet there.

perfect environemental condition, perfect phenotype, co² and all and you can reach 500 600gr/m² growing in sog from seeds i m around 350gr 400gr/m² depending strains and more or less good phenotypes