| The 1st pond I ever built for my self was in WA. 40,000 gal,, very basic filtration, no UV, and was always green.
After moving to OR I built a 12,500 pond, it was green for several weeks until I added UVs and then it cleared right up.
My new pond that I just finished this spring is 6700 gal, had UVs from day one, and has not turned green at all. Been clear the whole time. |