Longhairedgit on Nostr: say you had a castle with a moat that is clogged up and slimy. Too many phosphates. ...

say you had a castle with a moat that is clogged up and slimy. Too many phosphates. Turns into green sludge in summer. You could throw some straw in and hope the problem goes away, or you could build an algae scrubber with a solar pump in a greenhouse, get the nitrates out, and dig the algae sheets into your tomato patch.

Options.