despreauxb
Fish Fanatic
So I actually bought the replacements like I'm the pictures in bulk. I think I have a total of 12 replacements. Can I use them and then replace with a sponge? Or should I just switch my filter complete ly? I was always taught to replace it every 30 days. But I never was taught to cycle your tank. So I thought when you do do your last water change of the month to switch them out.You do not replace the biowheel. Ever. I would replace the blue cartridge with with some sponge cuz it will save you money see vid:Attach files