Mike, It is an essential part that is often overlooked easily. My Reds were really dull, like a pinkish. Since I am running bio pellets and somewhat a ULNS, it has been known to deplete potassium faster. I tested my water and sure enough it was low around 280. I raised it up to 400 with the Red Sea Coral Colors B Potassium. Now will just have to wait and see how the dosing affects it. I also tested my Iron and was very surprised to see that I have near 0.00 ppm readings. Makes sense since corlas use this to make yellow/green colorations and i have a lot of green/yellow sps. I will test my water change water and see what it reads before dosing that.
For the Club I picked up the 2 Red Sea Pro Multi Test Kits at the Critter the other day. Reef Foundation and Coral Colors Pro Test Kits.
I asked Chris about ordering the Fish Trap that Dowtish recommended, but he does not get Aqua Medic stuff, so if we want that particular one we need to order it online.