It's hard to be patient! Any suggestions to my current set up?

I am patiently waiting for my 6 juvies to grow up and finally begin this breeding adventure!

They're cuurently being housed in a 29 gallon tank with a large piece of driftwood, 3 pieces of small cholla wood, live plants, penguin HOB filter, air pump, and some swordtail fry. The tank temperature stay at a constant 77 F. Their favorite food is by far no salt added canned green beans. They also get zucchinni, algae wafers, deshelled green peas (weekly or biweekly) and I'm sure they munch on the flakes and weekly bloodworms that I feed the swordtails. Water changes are done weekly. I have honestly never tested my water. All plants and fish thrive in my tanks (5 in total.)

Is there anything that you could suggest that I do differently or in addition to what I'm already doing? I can tell they're growing, even faster than I've expected! I know time is all I really need, but I want to make sure these guys get the best head start as I can provide. Also my BF bought some vita chem. Have any of you used this product? So far I've been adding it to my weekly frozen bloodworms.

I've got nothing. Sounds like your fish are living better than most people

Looks like your fish are truely lucky and you are doing extremly well.
The best you can for them is to do nothing more.
Can I be a fish in your tank
Marty