4 days ago we added our first fish to our 3-week old 14g Biocube - 2 clowns and 1 sixline wrasse. We had an algae bloom which seems like we are getting under control with the addition of chemi pure. If you get close to the water it has an odd odor. Water check indicates o ammonia, 20 nitrates, .5 nitrites 7.8 pH and 180 alkalinity. I did a 2 gallon water change on Monday. Could it be the food we are feeding our fish and coral? Or is it something else? Any tips are greatly appreciated!