Open Brain faded ~help!~

[Aquattro]

With a reef, you should have at least Ca and Alk test kits. Maybe Magnesium. A properly functioning tank hardly ever needs to be tested for NH3/NO2/NO3, so I usually just take samples to the LFS if I'm curious. Get good kits, Salifert or Elos. A quality refractometer is important to keep your salinity at correct levels (which should be higher than what you currently run).
What lights were your corals under when you bought them? It may be that your's are significantly different, giving you these results. Also, most loss of vibrance in color is due to excess nutrients. A good skimmer and/or frequent water changes can help in that. Rinse frozen foods to remove any juices, which will be high in PO4. Make sure the corals get decent but indirect flow.