Filter Foams5 pack of Compatible with biorb Airstones suitable for all models old and new. Air Stones with FREE UK DELIVERY

Decided to try these BiOrb compatible air stones after finding original ones now £2 virtually price fixed everywhere. How do Oase manage to do that? These were 5 for a fiver with free postage. They are indistinguishable from the Oase ones, fit perfectly. Recommended.

these appear to foam up when first put in tank, ? if this is ok for the fish, next time I will buy bio orb make. they also do not work in my bio-orb tank, I've tried full packet and none work, complete waste of money !!!

The Answer to the Question is a Big yes am made up with them and a good prize too

Does what it says to do !!

Much cheaper than the official ones and last just as long

Compared to biOrb ones I haven’t seen any different in use, price wise they are much better value.

I buy them on regular basis great value

Be careful bit tight but ok