It was pouring rain yesterday, so I grabbed a bunch of scrap PVC and got to making an inexpensive hatchery for my eggs/babies.
You're looking to make a rectabgle, and I had a whole bunch of these on hand:
Next, just put all the parts together. If I would have had a can of black spray paint on hand, I would have sprayed the pipe black or used ABS pipe, but all I had was this and black paint. Sigh!:
Next, put all your pieces together to form the top and bottom. I made my hatchery particularly large (34") because I wanted to potentially use to separate a fish in the pond if I had to, or to put in a specific breeding pair of goldfish. You can make yours any size you want by cutting the PVC length accordingly.
Put the pieces of PVC in between the top and bottom now to build your box:
You're looking to make a rectabgle, and I had a whole bunch of these on hand:

Next, just put all the parts together. If I would have had a can of black spray paint on hand, I would have sprayed the pipe black or used ABS pipe, but all I had was this and black paint. Sigh!:

Next, put all your pieces together to form the top and bottom. I made my hatchery particularly large (34") because I wanted to potentially use to separate a fish in the pond if I had to, or to put in a specific breeding pair of goldfish. You can make yours any size you want by cutting the PVC length accordingly.

Put the pieces of PVC in between the top and bottom now to build your box:
