I'm running both a UGF, and a Whisper 60 external filter. The Whisper 60 uses 2 biobags, and 2 black filter media's. I don't know what is in the biobags, and I don't know what the filter media is made of.
My aquarium just finished cycling, and I just put in 6 tetras, so I don't think that I should vacuum the gravel yet.
In my opinion the odor isn't all that strong.
I've got another, unrelated question though.
My family and I went away for the July 4th weekend. We left last Saturday morning. That was the last time I fed the fish, the water seemed a little on the cloudy side to me. We returned home early Sunday evening. When I turned the light on, the water looked very clear.
After approximately a few hours or so, the water started to look a little cloudy again. It looked clearer from the front, and somewhat cloudy from the sides, and only in the same shape as the lamp was emitting light.
Why would the water be cloudy only in the portion that is lit up?
And how do I correct this?