From reading a previous post, I gathered that carbon/phosban need lower passthrough rates than a canister filter can provide. But as a great Master once said, Do what works for you.
I used them on my fish only tanks. I also use the eheim wet/dry canister filter on my fish tank.
I don't see any different in using a canister filter an say an emperor hang on filter as long as you clean them out so they don't turn into nitrate factories. Both are great for putting in carbon or a poly pad and do help pick up junk in the tank.
From reading a previous post, I gathered that carbon/phosban need lower passthrough rates than a canister filter can provide. But as a great Master once said, Do what works for you.
Canister filters are enclosures that hold various types of filtration media. They are attached to the aquarium via hoses and typically rely on a priming device to draw water from the aquarium via gravity. Once the water is in the canister, it flows through the media in a predetermined path to maximize exposure to the contents of the canister. A return pump will push water from the canister back into the aquarium. Canister filters come in a variety of different sizes and can be compared based on the number of compartments they offer as well as the features included (self priming, flow rate, ease of serviceability, etc). Canisters are typically used with the following types of media:
[[Activated Carbon]]
Nitrate "sponge"
Inert foams or sponges (used to catch large particles)
*Note that GFO requires a specific flow rate for optimum efficiency and typically needs to be in a clear canister by itself so the user can monitor the flow rate Canister filters require that the media be changed regularly and according to a set schedule or nitrates/nitrites, phosphates and other waste products may increase to dangerous levels in the canister. Canister filters are typically used on small or beginner aquariums because of their low cost and ease of use. Read More