I have a Penguin 100 HOB
filter on a 10 gallon tank.
if I raise the water level up to the bottom of the outflow tray, the water ends up looking hazy. I've heard this is caused by microscopic bubbles.
if I lower the water line, the flow is too much for the fish and too loud. And of course the water clears up
Does anyone have a suggestion on solving this 'haziness'?