Hi ummm I'm not sure bout water the fish shop checked water last week and said all was fine with the water. I have three female an one male. I got them two week ago but three days after buying them one of the females gave birth I manged to save 8 baby's as I didn't know she was pregnant. Thanks for ur replyhi dont panic...what are your water parameters? a breeder box shouldnt hurt. how many guppies do you have?