Kaneu
Aquarium Advice Freak
I'm actually thinking it is my driftwood that is...almost mulching..? If that's a thing. I bought it from an aquarium store so it is hard wood. But every time I touch it, tons of crap comes flying off into the water colum.What is your filtration system? You should have enough flow to move debris towards the intake. Leaving a bit for you to vacuum during maintenance. Another thought is that you have mineral precipitation. I had it when I first added my big rock to my tank. Tan dusty stuff for about 3 months.
I have 2 fluval C4 HOB filters. They are rated for 70g tanks so I have quite a bit of flow.