I have also gotten excellent yields with a MH through the whole cycle. If you want maximum yield then you have to use a HPS. Though I might add I was using only 1000 watt MH bulbs. Try using a MH throughout and if you get a good enough yield then stay with that. If you want to get maximum weight and resin production try using a sodium during flowering.
The short answer is yes you can use a MH for everything and get good results.
johnny5fingers Reviewed by johnny5fingers on . MH in Flowering I'm laying schematics for a grow room. If I can afford it and deal with heat issues properly is it worth having a MH during flowering? A wider spetrum mimics the sun more correctly right?? Has anyone has any experience with this? Thanks Rating: 5