A protein skimmer removes DOCs (dissolved organic compounds) from the water before they can break down.
You should use a gravel vac to siphon the detritus out of the crushed coral every couple of months. I had that substrate in my 29g, and it pulled out some foul stuff every time. I just siphoned what I could reach, and occasionally I would get very aggressive and move LR and corals to siphon out more areas of substrate normally not accessible.
A timer is key. They aren't expensive, and lock in a light schedule.
You can also run fresh carbon in a canister filter or Phosban Reactor to remove organics from the water, helping clarify the water significantly.
Try to feed only enough, but not too much. If you see food in the tank 5 mins after you dosed the tank, it is too much food. I feed heavily, but have the equipment to compensate for that habit.
I think that a sump is over my head right now from reading your website. It was good information though. I think my best bet is to get my lights set to a timer. Any suggestions on the timing of the lights? I've read to run the 10K for 8 hours, the blue 10 hours (one hr. before and one after the 10K) and the moon lights to my liking. Does this sound like a good idea?
I will be getting a protein skimmer too. Ebay has some Jebo skimmers for around $60 that fit up to 180 gallons. Will this skimmer be sufficient for my needs?
Another question about algae. I have a conk shell that I got snorkeling in Mexico that is about 12" in length that was covered in the purple algae, but is now getting covered in a green algae that forms in circles with whiteish rings on the outside. Is this good or bad algae? I will get pix posted before the day is out.
Thanks for all the help.