Hello everyone! Later today, we are going to go check out a used 55 gallon tank, I am pretty sure we are getting this one. The tank comes with one Zebra fish, one Pleco, another bottom feeder she forgot the name of, and an "eel/frog thing" (?). I have no idea what kind of fish the last two are, and I am not a big fan of plecos. I was really hoping to have a planted tank, and I have read that plecos are very messy, eat plants, and are probably too big for a 55 gal. I am also not sure about the "eel/ frog thing", I was looking at the Petsmart website and came across a Fire Eel. I hope that's not what it is, since they eat feeder fish, and will probably devour all the little fish I was going to put in there. Anyway, she says she hasn't cleaned the tank in a very long time, but the filter keeps the water clear. I am guessing the ammonia and nitrates are very high. I am really not very experienced with cycling. I have a 30 gallon tank with 2 common goldfish in it, I have never tested the water and they are fine. I do clean it often though. My question is, do I still need to cycle the tank? If I do need too, I am worried that the fish that come with it won't make it. Any advice? Also, the nearest pet store that does free water samples is 40 minutes away, so not very convenient. Thank you!