Meilleurs E liquides Gourmands pas cher Saveur ptissire Vapotank Vape Liquid Turns Brown Why Does Vape Juice Turn Brown in the Tank selbyvapes E liquide 20 80 Pg Vg de cigarette lectronique E liquide 80 vg 20 pg Good day, Recently my koi water keeps turning brown, I usually change 25 30% weekly or every 2 weeks but its still turning brown and its difficult to see the fishes , The filter i use is the cpf 2500