Make sure to turn whites to 100% when assessing algae color.That is exactly my fear right now which im trying to avoid if possible. I have a brownish red algae that grows on the glass (not green) which i tend to scrape off every 2-3 days.
green algae looks brown under blue “ish” light that most of us run with LEDs.
This is my tank under white. But it looks brown in normal bluer light.