Dust tends to happen when you add substrate. Switch out the feeders. You're just about cycled. Add fish slowly, maybe one for a week, check the readings every day. Be sure to check out the fish you want to add to make sure it's hardy enough; neon tetras are an awful choice, for example.
Nitrates usually range from 0 to 20ppm, with 40 being the max you'd ever want. If ammonia and nitrites consistently stay at 0 after a few days of testing, you're cycled.
Nitrates usually range from 0 to 20ppm, with 40 being the max you'd ever want. If ammonia and nitrites consistently stay at 0 after a few days of testing, you're cycled.