Hi so I just got a 20 gallon tank and I set it all up and filled it. I rinsed all is the gravel decor ect in cold water. The tank ran great and the water was clear and I added the first dose of nurafin cycle. The water was clear and the next day I Added the second dose. The water becAme cloudy and i waited over night for it to clear up. The problem is that its still cloudy. Should I add the third dose and the cloudiness is normal or should I wait for it to clear?