Protein Skimmer for 20L

[mrhasan]

I will be away for a month and since I won't be able to do the water change, and asking my room mate to change water along with top-off and feeding would be too much to ask for. Hence got the protein skimmer

It's been over a month and my basic parameters (amo, nitri, nitra) are all at 0. Since I knew that adding a better protein skimmer wouldn't help, so just bought the rio HOB and its working just fine