Live phyto can reproduce and turn your water into anything from slightly hazy/white to green. I had phytoplankton in my tank and ended up having to buy a drop-in UV sterilizer to get rid of it. At first I thought I had just slightly unclear water (it doesn’t turn your water green unless you have enough nutrients) so could not pin down what was going on. Totally stripped my tank of N&P meanwhile and caused acros to get really pale and not grow well. I’m not sure live phyto is so superior to just scraping your glass anyway.