High phosphorous usage normal?
I'm dosing EI and have been testing parameters twice a day while trying to dial it in for my tank. The goal is 10-20ppm nitrate and 1.0 phosphorus.
My nitrate drains pretty damn slow. Sitting at 20ppm it could take 5 days to get to around 0.
However, my phosphorous is a different story. I can fill it to 2.0 mid day or night, and then come back and test in the morning and it's already at .5!
Is this normal? Do certain plants use more phosphorous than other?