Economy Airstones (Diffusers), Blue, 4" Diffusing Area, Box of 24 Scalpel the Boot Scrubber features 2”

the Boot Scrubber features 2” side bristles and 1” bottom bristles

wait 30–60 minutes and spray

or USB Computer Cable or Wall Adapter Modes: Pre-Programmed Tests

Includes a durable sheath for safe carrying and storage

Economy Airstones (Diffusers), Blue, 4" Diffusing Area, Box of 24 Scalpel the Boot Scrubber features 2”Product Code: AA4 CS The AA4 Economy Air Diffuser is an economical moulded air stone designed to provide dependable aeration for aquariums, fish hatcheries, hydroponic systems, laboratory tanks, and other small aquatic applications. Featuring a 4 inch diffusing area and a standard 3 16 inch barb inlet, the diffuser produces a steady stream of fine air bubbles that improve dissolved oxygen levels, water circulation, and overall aquatic health. Its