| Don't have any idea why the red. Probably get some help from the pro's around here.
However, I would like to say that the pond, if indeed 2500 gals, sounds to be wayyyy over stocked. And it would be overstocked with a really good filter system, never mind the little pressurized tetra type that's in use.
Anyway, best of luck with the water! Looks funky.
Grant |