Marley Kitty....the ONLY thing shrimps teach you is PATIENCE!!!!
I had purchased several orange eyed black tigers a while back and NEVER saw one of them for 4 months
thought they had all died and
One day I was watching a baby CRS on the dragon lace rock (has lots of holes in it and babies like to hide in there) and there was a BTOE just sitting there. I saw a few more as the weeks went on, but they were hiding quite a bit.
So leave them alone, put their food at the front of the tank in a little clay dish (you get them at plant stores for around $1 each) once they learn where the food is, they will come for it and then you will be able to see them more often.
Sounds like you might be overfeeding (one of the reasons you get hydra) so before your shrimps start to have babies, you need to get rid of the hydra, because Hydra kill babies.
I use a paper towel and slide it over the hydra and pull it straight up and out of the tank, I learned this trick by reading about it on a lot of forums, and it works good.
If you have any crayfish/plecos, pick out the pond snails (others are fine to keep and a good cleanup crew) and put them in with the crays/plecos, then you can squish one periodically for the crays to eat (good protein for them, great for growing up the babies) I keep pond snails in all my cray tanks just for that purpose, steady stream of food
I would also suggest you read up some more on keeping shrimps of different types...ie: neos and crystals/tigers etc, to help you understand them better, as they are much different from amanos and filter shrimps like Bamboo.
A good forum for Cdns is gtaaquaria.com lots of people in your area keep these and can help you out, and if you are in the GTA area you can attend some of the meetings held in 2 different areas usually once a month.