I have been dosing 10mL for 13 days now, keeping my skimmer off for 2-4 hours depending on my memory. I am pulling a lot more skimmate. However, I am not seeing any of the results previously mentioned. My rocks still have a green film. I have to clean my glass every 3 days. My numbers did drop according to my testing (NO3 and PO4). I am also running GFO, to help keep the numbers down. My Acans are loving the new lower nutrient environment, however, my Blastomussa Wellsi is not. I don't know if it has anything to do with the BioFuel, or lower levels, but it has receded almost fully on one side (single polyp frag). I have moved it into more flow as suggested, and it hasn't shown any improvement. I did order another head from the same colony to test this in a somewhat controlled method. I will introduce this coral to a low nutrient system and see if it recedes... My fuge seems cleaner than it was previously as well, and my Cheato has not grown, nor shrunk in the 2 weeks. I have lowered my dosage to 7mL starting today, and will keep it at 7 until tomorrow, then to 5mL on Sunday. My total water volume is around 94 gallons. I should have about 25 days after Sunday left in the bottle.