Well...the reason most of us are using LR
and a skimmer is that it works. Wet/dry filters work also. You can have a successful tank either way. However, if you have an adequate quantity of LR
and a DSB
, you really don't need the wet/dry. Wet/dry filters were all the rage until recently and I suspect that quite a few pet stores are still using them because they had them set up and...they do work. One problem that may occur with a wet/dry setup, and not everyone has this trouble, is the buildup of nitrates in the water. The wet/dry, while it excels at ammonia/nitrite conversion, has no way to export nitrates. I expect the amount and frequency of water changes may be why some folks don't seem to have a nitrate problem. I would be willing to bet if two systems were set up, one with a wet/dry and the other using LR
and a DSB
, the system with the wet/dry will consistently have a higher nitrate level no matter how often water changes are done. JMHO.