Tank is 6 weeks old 46 gal bow front. 40 to 50 lbs live rock i added 10 lbs yesterday. I added snowflake eel thursday and 2 tiny small clown friday one of them was eatin by the eel. I added 2 bigger clowns sat with the 10 lbs of live rock. I added protien skimmer today not really doing much yet. I have 2 power heads korallia #2 and a #3. I have the Aquatic life T5 HO with night leds for lighting. i have been running them all on the timer. and 2in of live sand. i checked all the levels thursday befor i added the eel and everything was perfect tank had been cycling everything was ready to go. 0 ppm on ammonia and nitrate I checked the ammonia and nitrates last night "sat night" ammonia was at .25 ppm and nitrates were at 80ppm. This morning ammonia was at .50 so i changed 15 gals of water today with RO water and nitrates were still at 80 ppm.??????? all the fish are fine still eating and looking happy. green algae has been growing iv been scrubbing it away and moving the sand around a bit. Can you help me?