I am so happy, excited and grateful I did a search on my beloved iTunes and found these podcasts which led to this web site. I have listened to all 101 podcast in the past week or so. I removed my bio-balls and canister filter half a week to a week ago and my chronically high
nitrate levels ( 40ish ) have dropped to close to 0 after one water change. I currently use tap water but plan to use a
RO/DI unit soon. However I am lucky as Sydney area in Australia is renowned for one of the best water supplies in the world. I have checked the tap water phosphorous levels many times and they are ALWAYS zero. However as it is for many reasons best practice to use
RO/DI water I plan to do this in the future especially for my new 150g/600+ litre tank I plan to set up within the next year.