This is a wysiwyg. I simply upgraded and it's time to sell old faithful. The eheim works fine but might be due for a new impeller soon. Looking for $90 whole dollars for a slightly used knob c. Pm is key. Will also trade for any equivalent combination of the following: utter chaos, red hornets, blue hornets, purple hornets, cars, cherry charms, dragon ball z, oompa loompa and wows.