Probably spider mites . . . pretty common mj pest. You will need to get rid of them.
This fix was posted by a RIU member who's user name escapes me.
Take a misting water bottle that has the trigger on it.
- Cover just the bottom of the bottle with dish soap (I use the orange anti-bacterial kind)
- Fill 3/4 with just tap water
- fill remaining 1/4 with white vinegar
- shake gently, not too much though or you will have lots of bubbles, lol
- spray all over your plants, under the leaves and the top of the soil unitl a light coating is on there (don't get it sopping wet)
- leave on at least a few hours or over night
- spray off all the plant ( I do this with clean water in the spray bottle)
- bugs gone, shiny leaves.
I've dealt w/mites a bit and plan on trying this recipe next outbreak.
Good luck.
You should confirm your pest type . . . mites look like tiny crabs and come in several colors.
You need to re-treat in 2-3 weeks to deal w/eggs.