I'm trying to set up a guppy breeder tank. I bought guppies and found out the hard way they are bullied by zebra danio (one male died). I still have 2 males and 1 female. The guppy is a Goleta guppy or Goleta dart. Anyway I quickly bought a medium breeder tank and put them all in there for the past week while I got a 10 gallon tank and there are already fry. Guess I'm a breeder now:;rules. My question is what is the best way to set up this breeder guppy tank. I want it set up today and I'm not trying to spend a lot. Can I just throw the filter on with half water from my established tank and half new water (read this somewhere) and I am also going to throw in instant bacteria that I bought. Are gravel and plants necessary or should I just separate the pregnant females into the breeder tank? Thanks!