Mardel test strips use the same technology found in medical laboratories and replace other potentially toxic & time consuming kits. Designed to be accurate and dependable while being safe & easy-to-use, these test strips help measure pH, hardness, alkalinity, nitrite and nitrate. pH indicates if your water is acidic or basic. Alkalinity is a measure of the compounds that stabilize pH. Hardness is principally a measure of the calcium and magnesium in your water. If water conditions are not within the desired range, your fish may become stressed and susceptible to disease. Moreover, nitrite & nitrate are byproducts of the nitrogen cycle, a natural process that breaks down waste in aquariums. Nitrite is more toxic than nitrate, and should be held below 1 ppm. Again, these test strips are really easy-to-use for fast results. Just dip and compare to a color chart for best estimated value. These test strips can be used for measuring both freshwater and saltwater aquariums. Shipping-Weight: 0.3 lb |