Usage for hash tag: FirstSalt24

...M100 but on the M180 you can fit a ReefMat 500 without modification. The M180 uses the Eshopps 7 inch rectangle filter sock. If the M100 uses the same then the chamber is probably the same size. If you want to go to a 1200 #FirstSalt24 has a build thread where he modified a M180 for the 1200.