I also have it set to do a pulse wave on the lagoon setting - probably should have mentioned that.I just added an mp40QD last night to my mp10 in a 65gal tall. I changed my overnight to lagoon now instead of constant. During the day I'm running reef crest and nutrient export from about 7p to 11p. Im just starting, tank going for 3 months now after cycle. So what do I know.