My Girlfriend is starting a small 10g Fancy Guppy Tank. We have a Marineland Penguin Power Filter 100. capable of 100g/hr so able to turn the tank 10x an hour. Good there. Now i keep my 50gallon tropical community with a canister filter. So i have plenty of bio-media in my trays. More than enough for 300 gallons of water. I hate these removable cartridges in the power filters as you'll just be throwing away your BB when you replace it. So I've opted to try this model with a bio wheel, but I'm skeptical it will do much for biological filtration. What i really need is some help with how to get some space for BB in a small power filter like this that wont get thrown away Any tips on what to do?