Well in any event....I picked up an established 30 gallon tank today and set it up on my kitchen counter. I also picked up some HOME BRED Cardinals......only for $6 each.
I have them introduced with ultra clean water and will see what happens.
What are your FULL params? ph7.9
temp82
Ammonia 0
Nitrite 0
Nitrate0
What food did you use algae waffers and blood worms
How mature was the tank 1 yr
Was there algae yes
Agreed. If your tank is as well planted as you say, it would be very hard to see any bodies.
Are you sure there's no heavy metal that went into your tank? Any medications or anything of that sort?
What filtration do you have running? Have you tried any chemical filtration recently?
What fertilizers are you using and in what quantity and how often are you applying? You may be feeding your plants but poisoning your shrimp. I don't know enough about fertilizers and shrimp to comment based on your answer but hopefully someone who does will.