I checked the pH it was around an 8 so I lowered it to around a 6 and added a small amount of maxigro hydroponic fertilizer which would provide more phosphorous and potassium to the water. I run the pump for about an hour a day to help move and oxygenate the water.

I think the duckweed is outgrowing the azolla at this point, but it's going to take another week of visual change to be sure.

Any suggestions are appreciated, thank you!