HTH
Howard
We have another post about duckweed control. Rather then hijack the OPs thread lets talk about growing duckweed here.
I am growing duckweed in one of the containers in my 1000+ gallon setup made of IBC containers aka lifts. Currently the duckweed is getting about 25% of the water that come out of the barrel filter. Started with about 4 square inches of duckweed. Keeping fish in the container would be a bad idea because the duckweed takes up most of the surface. They say it grows by 75% or so a week.
My tap water has 30+PPM nitrates and between the duckweed and bare root lilies the nitrates in this system is in the 20PPM range last time I tested it. Not bad as it is not lightly loaded.
I was worried about the string algae but for anything but fry I feed it along with the duckweed. I have since removed the quilt batting tray to ensure the duckweed gets enough sunlight.
I am growing duckweed in one of the containers in my 1000+ gallon setup made of IBC containers aka lifts. Currently the duckweed is getting about 25% of the water that come out of the barrel filter. Started with about 4 square inches of duckweed. Keeping fish in the container would be a bad idea because the duckweed takes up most of the surface. They say it grows by 75% or so a week.
My tap water has 30+PPM nitrates and between the duckweed and bare root lilies the nitrates in this system is in the 20PPM range last time I tested it. Not bad as it is not lightly loaded.
I was worried about the string algae but for anything but fry I feed it along with the duckweed. I have since removed the quilt batting tray to ensure the duckweed gets enough sunlight.