I have no personal experience with this but this should help you:
http://www.aquaticquotient.com/forum/showthread.php/95448-Vorticella-Parasite-%28white-mold-fungal%29-Treatment-on-Cherry-Shrimps
I hope for the best for your shrimp!! It sounds like some people did lose their shrimp trying this...
x2 I know you said you don't want to spend the extra money but I cannot say enough good about my
Ray 2
Fugeray Planted+
They are amazing. I'm saving for a ray 2 for my 60 gallon..
Same... My wife REALLY wanted them, so we got some. They didn't live long at all. We've had almost no losses in our tank (besides them) but 24/26 glofish died.