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Alien High Efficiency Air Stone

  • Quality Black Corundum higher density Stone
  • Creates finer bubbles for increased aeration efficency with no increase in pressure
  • Sucker Clips for Airline are available seperately
  • The Alien® Black Series Air Stone is made of quality Black Corundum Stone which is sintered at 1500 Degrees Celsius and is of a higher density and quality than Green, Blue or even White Corundum. It is a realtively small Stone at 50mm but punches above it's weight by using the air more efficently creating finer bubbles for increased aeration with no increase in pressure.


Our preferred payment method is credit or debit card. We also accept Paypal, bank transfers and cheques. Cheques must be cleared before we can ship goods. 


We take great care packaging every item to ensure your items arrive safely. All items come in plain packaging. Once your order has been processed and we have received cleared payment, your item will be dispatched promptly from our UK based warehouse. All orders are sent by 1st class post or other 24 hour courier (for the courier service a surcharge will apply for items sent to the Scottish Highlands, offshore Islands and Northern Ireland, you will receive an email detailing the surcharge). Usually you will receive your item within 2 working days.


Customers should satisfy themselves that any item choice made is suitable for their intended purpose or use. We pride ourselves in top quality British customer service. In the rare event that you have a problem with your item please contact us and we will be more than happy to help.

Items purchased may be returned for a full refund within 14 days of purchase. The item must be unused and in the original packaging.





Contact Us

01403 888276


Alien Hydroponics
Unit 8 Oakhurst Business Park
West Sussex
United Kingdom
RH13 9RT