Very new to the hobby. Have a tank that is Established. Have LR, three small corals an anenome and two damsels along with a cleaner crew. I tested whater parameters today and PH is 8. Ammonia is 0 and nitrite is 0. My nitrates read closest to 5. It's the stupid drops and on the chart they give you. My question is if I need to be concerned with the nitrate around 5.