Mysterious Floating Particles in Water
I have a 10 gallon aquarium that I've had set up for a little over a year. For the last few weeks I've noticed these small floating particles in the water. It almost looks like dust when the lights are on - amostly exactly like if you looked at sunlight coming through a window in a dusty room. There's also these same particles floating on the surface of the water. Any ideas?
In the tank:
(1) Pictus Cat
(1) Queen Arabeque Pleco
(3) Preacox Rainbow Fish
(1) Dwarf Gourami
Plus a few live plants
Tank parameters are fine: Ammonia 0, Nitrites 0, Nitrates 15
GH 10, KH 7, PH 8.0
All of the fish appear very healthy and happy.
I have been dosing with Iron and Potassium a little heavier lately in this tank as the plants have looked a touch ragged. (I do test for Iron and it had been on the low-side in this tank.) That's the only thing that I can think of that has changed.