I know i made some changes to my setup, and i ended up with huge brown algea bloom.
Changes. Raised water level in sump, covering bio balls. Had bio balls above water scrubbies below.
I added some moss to help lower ph levels.
Tank was up and running 3 months with no major water changes, just a drip. I reworked the spray bars, and since i was gpoing to have to leave wife in charge, i raised water in sump. This was also first big water change.
2 weeks later , all is brown.
probably has nothing to do with bio, i dont know.