There are white spots covering the inside walls of my tank, and also on the heater. They vary in size, but none are bigger than about .5cm diameter. They look kind of fuzzy to my eye... They come off easy enough when I run the algae scraper over them, but I just want to know if it's something I should be concerned about or if it's normal, as I've never seen them before.
Tank is 130L and is around 10 weeks old. It's due for a water change/gravel vac tomorrow. Nitrates and Nitrates are 0, ammonia looks around .25 (but I use an API test kit and after reading around the forums here I've read they often show false readings, so not sure how accurate the ammonia reading is as it's shown that for weeks now). Fish are all acting normal. Any advice?
Tank is 130L and is around 10 weeks old. It's due for a water change/gravel vac tomorrow. Nitrates and Nitrates are 0, ammonia looks around .25 (but I use an API test kit and after reading around the forums here I've read they often show false readings, so not sure how accurate the ammonia reading is as it's shown that for weeks now). Fish are all acting normal. Any advice?
