Marinero

I bought 10 guppies for $2 at a local pet shop to use to start cycle with my 42g tank. After I got them home we noticed that they weren't guppies at all! They were zebra and pearl danios 10 for $2!

atmmachine816

Yes that's a good deal but using fish to cycle your tank is effective yet not the nicest to the fish, good thing zebra danios are hardy.

fish_r_friend

just keep up your water changes once a week

0morrokh

More like once a day if you have high ammonia levels.