fluffy

I’ve got a new 92 total system volume tank set up and cycling since April 2023. Water parameters have been holding pretty stable: Alk 7.5 CA ~450 Mg ~1360 Nitrates are negligible The tank seems pretty clean except for this weird fluffy light brown/white algae substance that is growing on...

Hi hopefully someone can identify this for me. I’ve never seen anything like this before. I tried to manually remove it but it’s surprisingly VERY hard to scrape off even with a toothbrush. It’s a 6month old system 125 gal with a VERY LIGHT bio load(two clowns, a gramma, softies and hammers)...