Brown worm like remnants, plus small flies
#1
Hello,
Since getting the ammonia and nitrites under control, there is now another problem (see image).
Besides this, there are small flies on top of the water (~1-2 millimeter)
Could you please let me know what it is and how to get rid of it?
Thanks!
Attach file:
IMG_0070.JPG (151.78 KB)