Protein Skimmer for 20L

[mrhasan]

Hello Everyone,

I am actually looking for a HOB type protein skimmer for a 20L. I know I can get around without a skimmer by weekly WC. But I want to delay the water change to maybe two or three week (being lazy :$). I was hoping to get a RIO nano skimmer (saw mixed review) and I know I will be getting what I pay for but I just want to know whether it will serve my purpose (like shifting weekly WC to bi-weekly or more). Or is there any other skimmer that might be better than this and will not break my pocket (reef octopus is just too expensive for me unless I get a good deal on a 2nd hand one).

Looking forward to some great suggestions