haha..I am guessing by your comment, the K5 is a big mofo. :) There are smaller pumps that style... maybe I'm thinking of the Tunze Nanostreams.

I had 2 MP10's on my old 24g tank which is like 1 mp10 on a 12g.... sorta.

I had a couple spare Tunze 6055 and MP10's and in the end I ended up using the MP10's as they took up so much less room in the tank and I didnt have to have the power cord coming up and out the top of the tank. Basically the cleanliness is why the MP10's ended up in my tank.

i vote the mp10 small footprint is key lol, especially when its only a 12 gallon, heck i'd get a mp40 and leave it at the lowest setting and it won't protrude out as much as a k2 lol and you can use it later on for your upgrade to a larger tank lol

My vote is for mp10 as well, its worth the cost. I love my tunzes but like mentioned above, they take up alot of room. IMO if I didn't have my tunzes I probably would be running vortechs

I have an MP10 in my 15G right now and it is probably the best upgrade I've done. I put it into "Reef Crest" mode and my tank has exploded. My SPS has coloured up, has exceptional new growth, and everything is thriving. Definitely tossing a vote for the MP10.

well i guess its setteled then. I will be starting a new journal monday or tuesday for my 12g build.