That's fine for guppies. But my warning about the numbers of babies still stands.
I would go for an all male tank because they are prettier and females can store sperm and will continue having babies for several months without a male.
Or look at endlers, again all males. They do have the same issues with fry, but they are smaller, don't have the long flowing tails which can get nipped if guppies have a fight, and in my opinion look better than guppies.
The thing with guppy or endler fry is that there will be just so many of them. You would have to keep them until they reached a saleable size, by which time there will be at least one more batch of fry. Most shops won't take them as they can get them very cheaply from the wholesaler, and they worry your tank might be infected with something. And there's a limit to how many fry you can sell/give away privately.
I would go for an all male tank because they are prettier and females can store sperm and will continue having babies for several months without a male.
Or look at endlers, again all males. They do have the same issues with fry, but they are smaller, don't have the long flowing tails which can get nipped if guppies have a fight, and in my opinion look better than guppies.
The thing with guppy or endler fry is that there will be just so many of them. You would have to keep them until they reached a saleable size, by which time there will be at least one more batch of fry. Most shops won't take them as they can get them very cheaply from the wholesaler, and they worry your tank might be infected with something. And there's a limit to how many fry you can sell/give away privately.