Vicki, I'm not handy at all, but even I made a tumbler when I was saving and raising African cichlid fry. I had one spit out a bunch of eggs so I had to scramble to come up with something. A sponge filter and some netting make a decent tumbler.
Look at how cute if you tumble and raise from eggs!!
Eight days later...
Another time -- I thought this was too cute -- the baby on the left looks like it's smiling.
You did the best you could for the balloon rams. I wonder if the "balloon" part made them more prone to conditions or generally not as healthy or long-lived.