marea,
Take some pictures in a normal light spectrum. All the colors are different under the HPS. Hard to tell what they are as it's so orange


If they are mites they'll be attacking the top of the plant, Check the underside's of the leafs for them. There large and they leave webs. Misting your plants (to keep humidity up) will prevent them and make there lifes hard. as they hate water.

looking good my friend, I shall come over soon
later