AS23L 1.5" x 1.5" x 9" w 3/8" poly barb, Medium Pore Air Diffuser
100% Glass-Bonded Silica Air Diffuser
Medium pore air stones made in the USA.
These diffusers are the highest-quality ceramic-type air stones machined from a block of glass-bonded silica. These air stones don't need expensive air filters as dust and dirt particles up to 30 microns will pass through the system.
With an air resistance of less than .25psi, they are compatible with economical low-pressure blowers. Because of the uniform medium/fine bubble these diffusers produce they are very resistant to clogging. The best way to clean them is in an acid bath which will remove any build-up of calcium or bacteria.
Note: that water pH more than 9.0 will shorten the diffuser life. Self-weighting when used with typical tubing lengths.
Royal Mail 24 / Royal Mail 48
This service can take up to five working days although typically most items are delivered within two working days. We can only ship some of our smaller products via this service
Royal Mail Tracked 24 / Tracked 48
This service can take up to five working days although typically most items are delivered within two working days. We can only ship some of our smaller products via this service. This is s tracked service, and does not require a signature.
DHL Express / Menzies
We offer next day as standard for our stock items with our logistics partner DHL. Tracking and shipping notifications will enable you to know when you parcel is out for delivery.
Please note we try to keep all products in stock, however at times out of stocks cannot be avoided. We will always email you updates on your orders status to keep you fully informed.
Royal Mail International Tracked
This service can take 5-10 days dependant on your location. This is a tracked service for small, lower value items
This service is for most countries in mainland Europe. Delivery is 2-7 days dependant on your location.
This services can take 2-7 days dependant on your location across the globe. Europe is typically 1-2 days from despatch, USA 2-3 days from despatch, Australia 5-7 days from despatch