What I thought was the beginning of hair algae, was just GDA. I'm trying the three weeks of waiting method. I haven't scraped the glass for two weeks. (And its killing me) The hairgrass is still growing good but has GDA on it. One more week and I can clean the glass. If that doesn't do it then I will be trying adding Mg, Epsom Salt.
Badis is eating frozen brine shrimp and little worms I have in the substrate.