30% water change. I have been on the struggle bus for months with this tank. Green spot algae and then a big hair algae outbreak. The hair algae has been really tough to get a handle on. I think I am finally be turning a corner with it. Today was a big prune of rotala that has been hanging onto quite a bit of it, a serious vacuum, and getting as much out and off plants by hand as possible. Hopefully this next couple weeks shows that changes are working.