Description
Description: Attention: Note: Fit for warm water aquarium (20°C -30°C) or (65°-85°F) 1.Slowly place the hydrometer into water. When testing, make sure the test water level reaches the wave scale. 2.If there are air bubbles stuck on the pointer during the product test or while put it into water, use a plastic stick to blow the foam to make the bubble dismissing,to ensure accurate readings. 3.Place the product in the pool or on the horizontal line outside the pool to accurately obtain the test res
