It is always good to keep the amonia levels down The ghost shrimp deaths are most likely due to the stress and poor treatment they received before you got them . They are treated so because the suppliers and the store owner look at them as feeders and bulk items istead of the interesting living beings they are
I almost forgot to welcome you by the way. That is because we have spoken before elsewhere Well, hope you get a chance to look around and read whatever you find interesting. This is a great site to learn and share the latest information in the hobby. Well, Welcome and hope you have fun
You should probably research tank cycling to better understand the biological processing of ammonia. Products like that are a questionable and ultimately unnecessary fix.
Carbon and Yucca are right...you do not need any ammonia removing products....your bacteria already do the job provided your tank is cycled. And if it's not cycled, then there should not be any shrimp in there anyway. These products are totally unnecessary and just mislead beginners.
I bought one of these once for a 40G tank and it caused ammonia to jump!!!! I'll never risk it on another tank let alone ones with delicate and sensitive shrimp.
I would think Prime would be safe for once in a while use if you monitor the tank for ammonia.
I also have those seachem ammonia alert cards on my tanks. I used it while fishless cycling with chemical ammonia and they seemed very accurate. I just would hope I would catch a spike before it got high enough for the card to read it.
Thank you for sharing your experience with us. Have you decided to get those amanos yet ? Well let us know when you have become a shrimper and keep in touch