I started a 5 gallon freshwater yesterday. I have been adding cycle as directed by advice that it would help me cycle. I added 3 sunset platy's last night. This morning they are all sitting at the bottom. ammonia 0ppm, ph 8ppm, nitrites 0ppm, nitrates 0ppm. temp 75 degrees. I use Prime for a water conditioner. filter is a 5-15 aqua tech.