I'm planing to buy a separate tank for my guppies to lay fry in, but for now, I have one of those breeder boxes with the V shaped thing for the fry to fall through. I already looked up when to put them in the breeder box but the only answers Iv'e found where to buy these plants for the guppy fry to hide in. I will not be buying those considering that I'm just going to buy another tank to put my guppy fry in. But for now, I'm going to use the breeder box. I'm just wondering, how do I know when to put the guppies in the breeder box? I wan't to know when my guppies will give birth in the next hour or so, so my guppies can stay in the breeder box for the shortest time possible. I don't want to stress them out or perhaps, kill them.