I only have a 12 gallon tank starting to turn into a reef and only have HOB Filter for filtration. I keep up on my water changes to keep water a good as can be. I have been doing so much reading and there are so many views and points on what works and what doesn't. What should I run in my HOB filter to help out my water. Right now im just running carbon biomax and some foam pad and things seem to be working out just dont know if its the best and i could be doing something better. Please let me know. I am also sticking with LPS corals if that helps.