The Planted Tank Forum - View Single Post - Filter for a 20L?
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post #9 of (permalink) Old 02-13-2013, 04:04 PM
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somewhatshocked's Avatar
Join Date: Aug 2011
Location: Louisville, KY
Posts: 12,362
2217 is definitely not too much. Especially if you want flexibility and factor in the similarity in cost. As others mentioned, 2217 likely won't be strong enough if you're hoping to use something like lily pipes.

2215 would be fine but you couldn't really meter flow. With a larger filter like the 2217, you have that option. As your filter ages, media matures and material collects? Flow will slow down a bit. If you have a strong enough filter, you can just turn things up a notch to buy yourself more time between cleanings.

With a 2217 or similarly-sized filter, you've also got the option of using any type of spraybar you could ever want. As well as the ability to use it on a larger tank if you so desire.
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