2 issues- Algae and Dying torch

[reefwithareefer]

Thanks Denny, but it is definitely not Brown jelly.

Only on the glass and when I use the magnet scraper to clean glass it makes a "dust" cloud in the water. Then you look at the magnet cleaner velcro and it is a deep brown color with no real slimy/jelly feel to it. It feels like wet dust.

The torch has noting on it at all, just the clear, light brown slime left from the tentacles that have died and now bright white skeleton on 3 of the 5 heads.

Besides the bioload of the livestock and foods, how else can nutrients be introduced to the water column?