That's what I am saying. That is a very low amount of lumens. The typical 600W HPS grow light puts out about 95,000 lumens and cannabis needs anywhere from 15,000 and 85,000 to grow properly. You having only 2710 is only about a fifth of what you need at minimum. The plants will still grow at 2710 lumens but they will likely grow very slow, and not produce hardly anything.