Reusable Filter for Drinkwell Original Pet Fountain
thingiverse
The Drinkwell fountain includes a disposable filter that removes any bad tastes/odors and extracts debris from water, but replacing the filter every 2/3 weeks costs money and it's a pain having to periodically order new filters.This reusable filter uses regular activated carbon sold in pet shops to purify the water of aquariums. I bought 320 g of activated carbon for 6 Euros that allows to recharge 30 times the filter. According to the activated carbon manufacturer, 10g allows to purify 3 liters of water. You can use as filtering material stainless steel mesh screens or woven/non woven fabrics (depending on what is available for you).The filter can accomodate different material thicknesses. Update june 15,2016: v2 higher activated carbon content and modified rubber band attachment
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