I have a 20 gallon high tank with an Aqueon Quiet Flow 20 filter. The filter replacement cartridges are pricy and didn't do too great at getting clear water so I am trying my hand at DIY cartridges' where I cut to fit them in the plastic cartridge holder in the filter. In the flow of water I...

Hello! I'm new and didn't see my question anywhere on the web or this forum. I plan on using quilt batting around a metal frame with some sort of media in between the layers of batting. I'm not sure if I should use just activated carbon (like this) or API Ammo-Carb (this). I think what I'm...