Some nice pictures hydrophyte,
can you share some water parameters that got them to flower?
temperature? pH/alkanity/? high phosphate/potassium fert?
is unparticular about water parameters. The tank where I have it now has hard water and high pH (8.3).
All plants need pretty good nutrition for flowering. Phosphate is especially important. I dose this tank casually with liquid ferts and there are also a lot of fish in it.