So far seems good. It hasn't clogged yet but we'll see after a month.
This is a great little stone! Small, weighted, adjustable, great value! Go and see Cam at TheFishRoom and pick one up, you won't be disappointed!
These really are great air stones for the aquarium and the service from The Fish Room is exceptional.
Awedome company to deal with, fast hassle free transaction, and post, great product, fish happy, will certainly deal with the Fishroom nz again .Thankyou
Best airstones on the market IMO. Adjustable & don't float.