Underground filters vs. nothing

[lauren]

Is it better to have an underground filter where the substrate is siphoned once a week, or to just siphon the gravel once a week? I have a corner filter as well.

The water in the tank is clear but discolored, and I think the stuff trapped under the UG filter might be contributing.

 

[benjamin]

It's better too have filtration especially with axies who are massive waste makers. It would make your job very difficult without a filter, and on this forum it is often said that under gravel filters are the best for axies.

 

[kaysie]

if there's crud trapped under your filter, then its obviously not doing its job and you can take it out. If you're good about siphoning (i do it twice a week or more) and put in a bigger filter (a corner filter's pretty small for axies), then you probably dont need the UG filter