It's an algae scraped. You run the water over a seive type device and the algae gets stuck to it. Then all you do is clean the seive off.
fur, can you further describe? Can you provide a link to this item? Or a brand name? I have not heard of such a thing, and it sounds most useful!
I can't take full credit for this as I got it out of the Duck-ponics thread but here's a link.
I'd like to add that when I saw it in the thread (didn't search too hard for it as I'm lazy like that) they had the algae scrubber in a "bucket" outside of the pond. The water was pumped onto the scrubber and then the water went back into the pond.
I've got one for my pond right now. i went to a hardware store in the painting section. They have these metal things for using rollers in the big buckets. I bought one and have it inside of a plant pot.
