hi ive been using 2 mars II 900 for a couple of years now, have tried different strains but never experienced the yield I got from hps. The buds were good to smoke but were light. The last few grows I have used 2 400hps lights as supplemental lighting to the mars, I run 1 for 4hrs shining from the left side, and the other for 4hrs shining from the right. giving a total of 8hrs extra light in the middle of the flowering day. The hps also run off a thermostat so on real hot days they wouldnt come on at all. The yield has increased by about a 1/3rd and the buds are dense and heavy. I believe the result is better than when I ran hps only, as the plants are covered in resin which seems typical for leds. I dont have the heat issues I had with hps, or the stretching, I can now grow during the day (which hides my heat signature) and because Im powering my household with solar panels the electrical smart meter cant pick up my electrical signature .
I posted this in the mars led thread as well
I posted this in the mars led thread as well