2 year old tank (moved once 10 months ago) 30 Gal with retro-fit dual 65 watt compact florecents lights on a 6 hours daily cycle, 3/4 watt night LED. Penguin 330 dual bio wheel hang on with new carbon filtration media. Salinity is at 38 (1.028) ppm, pH - 8.3, NH3 - 0ppm, NO2 - 0ppm, NO3 - 5ppm...