Hi I have a biocube 32 for about 3 months with live sand and dry rock. Let cycle start with turbo start for about 2 weeks and no lights before adding a damsel. I am currently up to 2 clownfish, a damsel, a pinkbar goby, and about 6 hermit crabs. Since I've had the tank I do a weekly water change of 5 gallons and the fish are doing great but I test parameters right after a water change and right before and I never have a traceable amount of nitrates with my API test kit. I have weekly diatoms take over the tank so instead of doing a water change this week should I just clean the glass and change floss and let nitrates build up?