UNDERSTANDING THE NITROGEN CYCLE
Cost. Aquarium Pharmaceuticals puts out a FasTestT Ammonia, Nitrite, Nitrate, and pH test kits. Cost is $9.49 for the Ammonia kit, $7.49 for Nitrite from Drs. Foster and Smith; each kit includes 20 tests and you can buy refills at a reduced price after you get the initial set up.
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