Hi Yvonne, its rare to hear that... haha i thought they are very glad to sell stuff...
For my case, i only have Ammonia and Nitrate test kits as i no2 was out of stock during that time. IMHO, cycling of tank is very important for livestock... if you are keeping shrimps, the best is to get all the ammonia, No2,No3 to be zero to play safe as they are a lot more sensitive compared to fish.
I just keep hardy shrimps and some fish, so far so good....
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