Master Aquarium Test Kits Master test kits include some basic tests you will need for freshwater, marine or reef aquariums. Generally they include pH, hardness and ammonia tests as these levels have an immediate negative effect if they get out of hand. You may still need to supplement a master test kit with other tests - especially if you see signs of stress, or if you are setting up a new aquarium - so browse our other sections to see what tests are relevant to your aquarium.
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