I have this red algae that is in my tank and taking off, there’s a coat on the sand due to bad flow, but even in high flow there’s a long stringy piece and some red bubbles as well that are on my rock at a lower-medium flow( I can’t get a picture of this one because it gets blurry and non visible). I’m waiting on new test kits so I assume nitrates are high - is there anything else I should do besides a few water changes?

