I live in zone 4 and have built 2 ponds before with DIY filters.
This spring I started a new 800 gallon pond, which has lots of lillys, iris, marginals all doing well. I am using a 1900 gph pump with a tetra 1500 pressurized for bio filter only and a 2nd 800 gph pump for inpond skimmer to a stream that returns to the pond.
The pond recently went totally green which I know is common on a new pond but I decided ot measure the water and fount 0 nitrate (calibrated test kit with my high tech dry fert aquarium) but 5 ppm phophsate.
I decided to buy a 55 wave UV to use in spring time.
I have never seen such green water in my old ponds and not sure other than UV what I should do. I also wonder if 0 nitrate (not good for the plants) and 5 ppm phosphate is a good scenario to have.
Anyone measure phosphate in their ponds as high as 5ppm? I don't over feed the koi which are all doing well and could cause phosphate to spike if I was overfeeding.
This spring I started a new 800 gallon pond, which has lots of lillys, iris, marginals all doing well. I am using a 1900 gph pump with a tetra 1500 pressurized for bio filter only and a 2nd 800 gph pump for inpond skimmer to a stream that returns to the pond.
The pond recently went totally green which I know is common on a new pond but I decided ot measure the water and fount 0 nitrate (calibrated test kit with my high tech dry fert aquarium) but 5 ppm phophsate.
I decided to buy a 55 wave UV to use in spring time.
I have never seen such green water in my old ponds and not sure other than UV what I should do. I also wonder if 0 nitrate (not good for the plants) and 5 ppm phosphate is a good scenario to have.
Anyone measure phosphate in their ponds as high as 5ppm? I don't over feed the koi which are all doing well and could cause phosphate to spike if I was overfeeding.