As you can see in the title, that is my main question but, here is the background behind it: Up until last night, my main sps tank was a 40 gallon acrylic setup with sump and a Tunze Comline DOC 9004 DC skimmer. Worked great. I woke up yesterday morning to see a start of a 2” long separation in the middle of the bottom seam on one side of the tank. Only 1/8” of acrylic was left before water would start leaking all over my floor. I look at my tank every day so this had to be very recent. In a panic I spent the next 12 hours wiring, plumbing and preparing water for my Nuvo 20 I got for Christmas. I was able to move all my sps frags and my fish over to the Nuvo 20. I also moved almost an entire box of ceramic biomedia spheres I had in the 40, into the 20. Today I went and purchased 15 lbs of real reef rock 2.0 from my LFS for my rock work. I had my Tunze skimmer in the side of the tank to help but had to remove it today to fit the rock. Sorry for the book but I like to give more information than not enough. One side of the overflow on the Nuvo 20 I have chaeto with a chaetomax light. The other side I run BRS ROX .8 carbon. Do I really need a skimmer? On my 40 it was so hard to have any nitrates or phosphates to a point where I was about to dose nitrates. Is it worth trying to find a skimmer that would fit or is all of this overkill anyways? This tank will be just like my 40 as an sps dominant.