i have a bathtub outside that contains 38 minnows.
i had cleaned the tub out, refilled, left for a few days, then put the fish out.
this was about a month ago.
it is now red.
there is nothing in the tub that would leach any red colour.
the water is tinged red, the java moss looks like the plant from war of the worlds, and everything is coated in what looks to be a red algae. i expected green, but not red!
any ideas on what it could be and how to treat it?
thanks