About 8-10 months ago I bought one of those Fluval 8 gallon dwarf shrimp tank kits. Not my first tank btw... I have a 20 gal long and a 55 gal live planted freshwater tank. The 20 long I have had for 25 years. Now back to the shrimp... I did the research and found they are the best way to get into this aspect of the hobby. One thing I read was if you have your tank parameters right they will probably breed. That I have found to be an understatement! I started with 15 Cherries and to date, I have taken 80 back to the LFS that I got the set up from, given a friend 30, and as an experiment to see if they might help a hair algae problem I was having in my 55, 60 went there... that is 170 of them... and while they are hard to count because of constantly moving, I have at least 300-400 in the Fluval tank
These things are out of control! If anyone here wants more details I have a lot to say...LOL!Brian
Congratulations on your success with the red cherry shrimp. Depending on your local water supply it can be very easy or extremely difficult to breed any shrimp (even the "easy" ones) in any great number. You seem to be one of the lucky guys out there with a decent water supply. Just make sure that you do not make any drastic changes as die-offs can quickly get you from several hundred shrimp to just a handful, or none at all. And by quickly I mean within days and weeks. Having said that, it seems like you're doing alright so far, so no need to change much. 
As for my water supply, I agree totally. I happen to be on well water. It is hard and somewhat acid. The acid could be a problem, but the live plants seem to calm that down quite a bit. The shrimp tank is at about 7.2ph. The hardness factor is a plus for these little guys due to the calcium disolved in the water. As I said in my initial post, I have been active in the fish hobby for 25 years, so I hope I have learned some things 
Truth be told, I brought the Fluval tank kit home, set it up, sucked 5 gallons of filth water out of my 55 gal live planted tank to seed the shrimp tank/filter, snipped off some cuttings of plants and stuck them in, topped it off, let it run a day, and went and got my first shrimp the day after. They all survived so I got afew more, then a few more, then the breeding frenzy started and has not stopped. The plants need to be cut every month due to growth! I do have a few die when molting, but the others just chow down on the dead and the cycle carries on. The 60 I dropped in my 55 are breeding and some babies are surviving... they are under my UGF plate growing, and in my cannister filter growing... the last time I cleaned my filter I had to use a shrimp net to catch the 10+ that poured out of it...not to mention the others I found in the different levels of media in the filter. These little critters have wiped out a hair algae problem in my 55... I was leary of putting them in there due to having a YOYO Loach that I bought to eat snails, which he did... the rest of my fish in that tank are just tetras. All have ignored them and again, they are breeding... this is just crazy! In talking with my LFS guy, "Don't mess with what is not broke!"
oh and one of my baby...my 55 live planted tank