No ferts, no substrate? No growth, no survival.
Waste of cash but I have tons of plants for sale and you're welcome to them.
All can be grown in 1.8 WPG except for the UG. No co2 is needed for any of my plants because I'm lazy and low tech.
You could always go to home depot and buy some of those cheap terracotta pots.
I'll sell you some substrate, you put them in the pot and then plant my plants in them.
If you don't do any water changes the fish poop will provide some decent nutrients to the plants, possibly enough to keep them alive. I'd really suggest dosing some ferts, even flourish comprehensive would provide some trace amounts to the plants.
What are you going to be breeding?
Crypts are low maintenance and will grow well.
If you have any driftwood you can attach moss to it.
Subwassertang is also a nice liverwort that fills in and provides a safe haven for fry.
-Gordon