Hello it’s been a minute since I posted I love cmh it gets good yield for the size and I did great with them on Autoflowers something about autos they love cmh but for my photos I run two rooms 10’x20’ each I run 2 600 watt bulbs every 5 foot x 10 foot but I stagger the bulbs in the one room I am running sun master full nova and super hps single ended the other room I run solis tek 4K de and 2k de and I stagger the first 2 in 5x10 is 2k than 4K next 5x10 is 4K than 2k than next 5x10 is 2k than 4K last 5x10 is 2k than 4K I do the same with full nova and super by far the solis tek room out yields but I’m sure that is because they are de bulbs sunmaster only makes 600 watt full nova in single ended no de except 1000watt they make full nova de-but the solis tek room set up this way out performed my old set up wich was 630 watt de cmh I use adjusta wing reflectors both rooms and pulling 1 kilo per light on average by staggering lights and using adjustable wing reflectors it gets great mixed spectrum cover and the de has a lot more Uv so my potency is higher I’m just switching all over to de both rooms will be using solis de I don’t rep for them I actually use sunsystem se/de 600 watt etelligent ballast for both rooms this is probably the only ballast other than solis tek I would use for these bulbs I will post pictures of next grow after switch and on last note the full nova room out performed the 630 de cmh room also now other companies like ipower are making a bulb similar to sun master for a lot cheaper check it out I think the key is adjustable wings and staggering bulbs though thank you