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Discussion Starter · #1 ·
hey guys, I'm wondering what filter would match well with the CaribSea eco- complete substrate. I've got a lot of duckweed in my tank, and I don't want it to get displaced by one of those over- the- top joints. I also plan on breeding some Endler's livebearers in the tank once I get this sorted. thanks!!
 

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There are several different types of filters, none are really affected by substrate choice. Generally if you are not drilling a tank, and don't want a hang on back filter, you would be looking for a canister filter. You can aim the return below the surface and that will stop your duckweed from being disturbed.
 

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An alternative to canister filters would be a HOB filter with a barrier around the output. This prevents your duckweed from getting knocked around. I have done that on my smaller tanks, including my wife's 55. After getting tired of trying to make floating rings with air tubing, I got creative. I got some cheap breeder boxes and stuck them under the filter output with suction cups.
 
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Discussion Starter · #4 ·
thank you guys for your responses! I ended up going with the classic sponge, and the duckweed has kept its distance while covering most of the surface, which is good enough for me. I've got a few pairs of endler's in the tank now, along with some nice looking plants.
 
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