Water feature/small pond. I have made three water features on my property using galvanized washtubs. All three have mosquito fish, solar water fountains, and one or two plants.

Two of the washtubs have clear water with visible algae on the sides of tub and objects within.

The other one has murky water and very little sign of algae but the fish seem to be fine. Should I be doing something to fix the water?

There does seem to be a more fine debris on the bottom compared to the other two. The water is sort of beige to army green, where as the other two have clear water with brighter green algae. attempting to clear debris from bottom just makes the water murkier.

Anyone have any ideas?