Recommend me a nano skimmer

[Kaiser]

My frag tank has recently been running a bit dirtier than I'd like so I've decided to finally get a nano skimmer for it. However the back chamber is only about 4.5"L and 5.25"W so unless I decide to run a skimmer inside the display, I need a small but decent quality skimmer. The display is 12 gallons and is gonna be packed with sps frag that I plan on QTing. Please help me find a skimmer that will work.

 

[GoVols]

For a 12 g, I'd just preform weekly water changes, but the below might fit your needs.

https://www.bulkreefsupply.com/tunz...MI2NGyxbOl3gIVWYezCh1p6gCiEAAYASAAEgKbaPD_BwE