Ive just set up a Juwel120 tank and have started a fishless cycle, but one thing bothers me about the tank, or to be more precise, the filter.
In the blurb that comes with it, it states that no extra aeriation is needed but I cant see how the filter is adding air / oxygen to the water. All it appears to do is suck in water through the filter and push it back into the tank. How does it aeriate the water?
Regards
Jim
In the blurb that comes with it, it states that no extra aeriation is needed but I cant see how the filter is adding air / oxygen to the water. All it appears to do is suck in water through the filter and push it back into the tank. How does it aeriate the water?
Regards
Jim