Hello- I just removed half my bioballs from my 14G biocube and cleaned the remaining with distilled water for the first time in 6 months - I filled the remaing chamber with two smaller pieces of live rock that I had. I have had a persistent problem with nitrates hanging between 5-20 PPM and was concerned that the inverts I had in the tank would suffer. What should I expect now from a water chemistry standpoint and how soon should I see changes? Thanks