Cherry Red Shrimp.  Having problems getting a population of these smaller colorful shrimp established.  The Amano Shrimp have all survived since I introduced them four months ago but these guys have not thrived at all.  Yesterday I checked the water quality and noticed some greater then 0 ppm of Ammonia so I did a 50% water change.  Perhaps that has been the issue.  I have only been changing about 5 gallons of water a week for my 29 gallon aquarium.  I believe I will monitor the ammonia levels weekly now just to keep an eye on that.