Hey, Im thinking of building a 24"x24"x 16" square reef tank, which comes out to about 40 gallons. Ive been keeping cichlids for a while but wanted to branch out into saltwater, and in particular having a reef tank.
My questions are:
What species of fish would do best in a 40 reef
What kind of filtration is best for this tank setup
My tap water is hard as heck. Can I use this or would I need an RODI