test kitAPI Freshwater Master Test Kit (800 Tests — pH, Ammonia, Nitrite, Nitrate)★★★★★ 4.8~$42Buy Now on AmazonSee full details
test-kit
API Ammonia 130-Test Freshwater & Saltwater Aquarium Test Kit
★★★★½4.7 / 5
~$12Buy now on Amazon (opens in new tab)About this product
The single-parameter ammonia kit to keep beside the tank during cycling — tracks toxic ammonia through the nitrogen cycle until beneficial bacteria bring it to zero.
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