I am currently dosing 12ml of VSV per day at the rate of 1ml for every two hours. My nitrate is standing still at 2.5ppm (Salifert) with heavy feeding of 4 times a day (artemia, black worms, TDO pellets & DIY shrimp meat). I have tried reducing my dosage to 8ml per day and my nitrate went till 5ppm. I am having less rocks than you may be around 15kgs and sand bed of 2.5". Below are the things I like to change and plan to do by this week, To get bacterial bio diversity, I am planning to start with the dosage of Prodibio biodigest and Bioptim Want to reduce the carbon dosing as my pH is swinging from 7.99 to 8.18 for 24hrs with alk of 8.4dkh. Do you have any suggestions please.