I ended up with Brooke in my tank so I had to remove all fish for 6 weeks. My tank was about a year old at the time and seemed healthy. Now, after adding back the 3 fish that survived and feeding the tank again, my sand bed is covered with a brown algae that seems to disappear at night. There is also what looks like some cyano on the rocks. I tested my nutrients and they are extremely low. Phosphate was 0.08 and Nitrate was 0.1. Previously my Phosphate was running around 0.2 and Nitrate was around 15. I guess I should have fed the tank more during fallow period. So, my questions are...
1) Any idea what this is?
2) What should I be doing about it?
Thanks!
1) Any idea what this is?
2) What should I be doing about it?
Thanks!