No i mean i will use this outside as one breeder box .i put one plastic box on top of the other the uper box will have holes small enough so mother can go through but babies can.and it wil aproximately inch and a half between bottom of upper and other box and then i will grow fry in bottom box about a week and half then i will buy tote of 5 gallons and small filter and then sell gupies to lfs
First of all, I don't recommend breeder boxes. I've tried them, and in every case the guppy either reabsorbed her babies, or died. Breeder boxes are very stressful for guppies.
Here's a good design for a fry trap. It lets water flow through, it's large so it won't stress the fish as much, and it's cheap and easy to make.
If you're going to start breeding guppies and saving the babies, you need a plan. Say your female drops 30 fry (could be 50, could be 80). She's going to drop 30 more in a month, then 30 more, etc. She'll keep dropping even if she's not hit again by a male. In five months you'll have 150 from the original, and your new fry will start dropping, which will mean another thousand or so. What are you going to do with all those fry?
Are you talking about putting a male and two females into the bottle thing? That's not how breeder boxes are supposed to work. You let them breed in the regular tank, then you put the female into the breeder box just before she drops her fry. The breeder box has an area where the fry can escape the mother, but the other fish can't get to the fry.
I went to a breeder tank where I'd have lots of plants. When the female was close to dropping, I'd put her into the tank and let her drop, then I'd move her out and raise the fry in that tank.