This product can be found in: Aquarium Filters: All | Aquatics 50% Off | Aquatics May Sale | Clearance: All | Clearance: All | Filter Media | Fish Tank Supplies | May Sale: All | Mighty May Offers   UK Standard Delivery FREE on orders over £39*   Rena Activated Carbon with Basket 51842 0 reviews | Login to review ON SALE: Order Today to Save 50% off RRP RRP: £5.51 NOW: £2.75 This basket already contains active carbon and can easily be inserted into your internal Rena filter. Active Carbon has infinite benefits when used as a filter media in your aquarium. It eliminates toxic substances and odours and takes out the yellow colour that can result from roots, peat, diatoms etc. It will not alter the water’s pH and it is Phosphate free. Based upon a 200 litre aquarium, the Activated Carbon will saturate between 4-6 weeks, replace after this period has elapsed.