HALJIA 4PCS 8" Aquarium Fish Tank Bubble Air Stone Bar for Oxygen Pump

Poor quality. Perhaps this batch was short of adhesive. Too light; I am used to air stones staying where put! One had inlet valve loose. Rest where the airflow is mainly determined by the leakage between the stone and plastic casing.

great price but not porous enough

3 work ok and 1 doesn't but to be honest at the price I still think good value

far too long and only worked for a week before the bubbles stopped.

Does the job great in my 4ft tank

arrived early well packed looked very good connected to a air pump and worked very well no problems.

Works well in my 400lt fish tank the fish love the bubbles thank you

Very good buy