Carbon has been linked in some cases to hole in the head disease in fish (Oscars) and in general, a healthy tank doesn't need carbon to be healthy. It has its uses (medication removal and stank fish odors), but not for constant use.
Mechanical filtration (what I use my HOT for) and Bio filtration is what helps the tank the most. Look up the stickys on types of filtration and you'll understand the process better.
As I stated, my magnum is wrapped with polyfill and the blue sponge as an addition to a 90gallons filtration, purely set up for mechanical. It may not be as efficient as the micron filter, but I don't have to swap it out weekly to keep the flow up...I also use the inlet for heat with a stealth type heater that functions as a screen and hidden heater.
If this is your only form of filtration at the moment, fill the basket with Purigen (250ml or 500ml) and install the blue filter and leave it until the filter starts to clog, only cleaning the filter, I'd bet it'll last a month or 2!