orchidweb carries some kovachii and kovachii hybrids readily available. they arent cheap.
I grow mine in a clay saucer with wet feet all the time inside a tank/waterfall..growing like a weed.
Use Pure water, Rainwater or AC condensate only.
Very little Fertilizer once a month and some superthrive in the water when I change it out each week..Gets fresh water every week..water quality is the key to phrags Im thinking so far...
I had put a piece of wood in my tank for aesthetics then to my horror I noticed the wood was leaching something salty and white..AHH salts!!! been flushin the phrags all week now...they are picky and react fast to bad water..They also like bright indirect light..Small baby phrags need less light cus they burn easy and will wilt if you dont keep then WET all the time....Im a noob and learning..
dont spray fungus or bactericide on the leaves..just put some in the water is what I do...The leaves dont like that stuff on them and they will turn yellow and get spotty but you have to keep the water clean and clear..did I say clean water enough?