The left most plant is limnofila aromatica, just to the right is a larger form of limnophila vietnam. The grasslooking plant is blyxa japonica(i tend to keep mine shorter growing and pull the larger plants), i dont like invasive runners from standard grass plants. As far as repashi, i like the food, but my morts arent very receptive to a sinking type of food so powder seems to spur thier interest a bit more than gel'ing it. They dont all breed eer other week, but it seems luck of the draw gives me atleast one pairing in that time although it doesnt always work out that way. I swap them into a more controlled environment to alleviate the morts/cpds eating all the eggs. As far as picking sex, id go for atleast double the number of females to males, they tend to spar frequently but i have yet to see any injuries. Msjinxed will be glad to give you what ever mix you want. And for reference, if you look at the anal fin you can see a deep red border, the females have a more lightly colored anal fin with no border. Others have stated that there are other ways to sex them but i havent found that to be reliable.
Thanks for the kind words on the 12, its still a work in progress more or less trying to create a bog effect on the right side.