dc power

Any recommendations as to the smallest footprint protein skimmer running a DC pump? Total water volume is 68 gallons…BUT…I don’t even want a super powerful skimmer because I’ll also be running a Reefmat 500 and have limited sump space. So really DC pump and small footprint are my main criteria...

CRJ DC 12v Power Supply: https://www.amazon.com/CRJ-Power-Supply-4-Pin-Computer/dp/B071FNN9W7/ I have several fans left over from old PC builds. Most are Noctua, NZXT, and a several Corsair. I also have more than enough extensions and splits. but I'm not sure how many fans I can chain to...