Can someone tell me which of these cherry shrimp are male and female and if any of them are pregnant?

[Tacocat]

You do need to check if there is any nitrate in your tap water. If there is, you need to allow for that when measuring nitrate in a tank to know if the bacteria are making any or if it's all come from the tap water.





[As a side issue, it needs to be said that it is possible to have zero nitrate in a tank - mine is zero. But that's only because the surface of my tanks are covered with floating plants. In a tank with no live plants it is unusual to have zero nitrate]

I have plenty of those, I just cleared off half of them, and about going to do 50% water change and algae cleaning once I get the test kits.

Side note: The thread has gone wayy off topic lol

 

[Essjay]

That happens all the time on this forum

 

[Tacocat]

That happens all the time on this forum

One more thing: so I should do daily tests with my new test kits, and if nitrites is ever above 0, then I should do a water change? And if nitrates is 0 when it shouldn't be, I should check something out. And what about ammonia?

 

[Essjay]

When a tank is first set up, if it wasn't cycled before fish were put in the tank, ammonia and nitrite should be tested every day, and if either of them are above zero a water change should be done. Nitrate is not as important. Any nitrite in the water will make the nitrate reading inaccurate because of the way nitrate testers work.
Ammonia and nitrite are both poisonous to fish - and shrimps - while nitrate is less poisonous which is why you need to concentrate on ammonia and nitrite.

 

[Tacocat]

I see. Thank you!