First of all, your time and patience is appreciated. I know this thread is probably one of those dime-a-dozen ones asking for relatively basic advice and input.
Anyhow, my tank has a bit of history with it. It's a standard 10 gallon tank with an under gravel filtration system and a filter rated for a 30 gallon tank. I initially set it up about 3 years ago... it's a long story how we got here, but the basics are that all of my initial fish died off and some of the new ones I tried out didn't last very long, so I gave up and decided to start from scratch. I took the tank completely apart, replaced most of the fake plants, cleaned off all of the algae, updated the under gravel system, etc etc and reassembled it.
I decided to start off pretty easy and got two platies. The employee at the pet store suggested NutraFin Cycle which is supposed to add beneficial bacteria and help cycle the tank, which I knew was probably a bit of a gimmick but I figured it couldn't really hurt and it didn't cost much especially considering I only have a 10 gallon tank to dose.
It's been about 2 days with the two platies and the cycle stuff. I just tested the water conditions with my API liquid test kit and came out with 0-.25 ppm ammonia, 0 ppm nitrite, and 5-10 ppm nitrate
. Please correct me if I'm wrong, but these actually seem like very good levels overall. So my question is, does this reflect a tank that is already cycled? I'm going to keep an eye on the levels and maintain a weekly 20% water change, but it seems sort of optimistic for a tank that's been running anew for only about 4 days.