Apera Instruments provides scientific electrochemical instruments and sensors for measuring pH, ORP, conductivity, TDS, salinity, dissolved oxygen, turbidity, and ISE with our industry-leading technologies, quality control system, and customer service.
Works well -- fans run smoothly.
Love It!! My tropical plants in my bioactive vivarium are absolutely thriving🌿💚!
Pump works as advertised. Fairly quiet. Works great for making 5 gallon buckets of aerated compost tea.
This bat guano is great! I made guano tea and fed the plants. They are a wonderful shade of green and are growing taller and thicker. I am very happy!
Great product and a great price