At the moment I only have 7 fish (platys), I expect to get about six more this week. Will this addition tend to cause a mini cycle in my 29 gal tank? Tank is cycled has been running for several months. Ammonia and nitrites zero, Nitrate 5 ppm, ph 7.8. Tap water is listed as 6.5 - 8.0.
Second question - How long can thawed frozen foods be kept in the fridge? I feed them as treats so it tends to take more than a day or two use up a single cube.