Choosing Fish And Shrimps

I've only seen two shrimps at the same time, I've removed two bodies so potentially one is the worlds best at hide and seek

Also is there a chart or table to show what levels for the water test are good and bad?  My test kit tells me my readings but doesnt then tell you at what point a reading is bad.

Ammonia should be very low, almost 0 all the time right?
Nitrite is 0 still, which when combines with 0 ammonia suggests all is well with the filter and plants.
Nitrate is 15ppm, is that high or can it increase more? 

That table you found is out of date, I'm afraid. It is now known that nitrate should be kept under 20 ppm, though this makes things tricky for those who have tap water nitrate over 20.

Yes, ammonia and nitrite should be zero. There will actually be a tiny amount, but so low that our test kits can't measure them.


Testers often give 'ideal' levels for pH, and hardness, but there is no ideal since different fish need different levels.




As for the shrimps, if you do discover they've all died, see if you can find a shop which will let you choose which shrimp you want, then get a female which is carrying eggs.
My experience with cherry shrimp is that all the ones I bought died, but the baby shrimps that hatched from the one egg carrying (called berried) female survived.