I know I am having a nutrient export issue....My nitrates read 5 and my phosphates read 0 but I know they have to be high!! Every time before a water change I use a turkey baster for my rocks and I have SO much detritus come off every single time I do it....I have a lot of flow already (mp40 and 2 Jebeao RW 15s)....I guess my question is how do I get my detritus and nutrient export back under control? My tank is a 180 mixed reef and I have been doing 15 gallon water changes every week, clearly still not working enough. Is bigger or more frequent water changes the only option pretty much for me?