500G Fish lab water purification biological formula blue salt blue powder garam biru XHDF

USAGE : 1)Add each time after changing of aquarium water according to the water change amount. 2)As sterilization for cold water fish : add in ratio of 2:1000. For treatment : Double the dosage.] 3)As sterilization for tropical water fish : add in ratio 1:1000. For treatment : Double the dosage. 4)During changing of aquarium water, add around 40pcs into 100L of water. Apply with protein cotton fiber, the outcome will be better. By using this while changing water, make sure filter is on. 5)Only one medicine can added at a time, and cannot be mixed with other medicine.