I've had this bin set up for about a month now and still the water is quite yellow, I don't want to use this for my w.c.! I set this up because I have a planted tank and the tap water here can be very alkaline and goes over ph8 at times! The setup: Steps taken: 1) ~1 gallon of Shamrock peat moss in a cotton pillow case was left to soak in ~9.5 gallons of water for two weeks. An airstone was used underneath to agitate the moss. 2) Tested water and it was slightly acidic at 6.8ph and the water had plenty of tannins in it. Removed the peat moss (made a big mess) and the airstone at this stage. 3) Setup a spare JBL greenline ^ to clear the water and remove any debris. 4) Added carbon between the filter pads and this was done on 20th (Wednesday). Water on 13th April: Water today (7.2ph due to less tannins?) ((doctor my sample is ready! :O)) Carbon I used: Can someone please tell me where I've gone wrong? Not sure if it's the carbon type (granule vs pad), or how much peat moss I used? etc. Thanks!