http://www.aquaessentials.co.uk/index.p ... ts_id=2988 aqua essential own brand liquid carbon, 250ml for Â£4.49, 500ml for Â£7.99 & 1 liter for Â£14.99? i'm pretty new to the planted aquarium world & i'm yet to set up my 1st planted tank it's still in progress. I came across this product which is cheaper than excel or carbo which i will probably get instead as it's abit cheaper. Has anyone tried it here? it's apparently the same thing as excel & carbo which is called glutaraldehyde which is just a hospital or dental disinfectant & also wort treatment apparently. Check out this thread about glutaraldehyde on APC it's long but also very informative. http://www.aquaticplantcentral.com/foru ... excel.html I'm planning to go down the non co2 injection path & use the carbo or excel middle ground approach as I only have a nano tank. But I still want to save as much money as I can along the way.