That’s like nutrient recycling, interesting idea!Funny thought:
I run an algae scrubber in the sump. I wonder if one could build an algae-scrubber-tang-feeder thing.
How long does it take for a screen to grow the algae? You could maybe set it up with multiple strips of those plastic sheets used in scrubbers, and swap a strip to the display to be grazed.
Here’s a pic to explain what I’m thinking. So this would have 4 strips that can be rotated with a 5th in the display that’s being grazed