hi ribbitt,
a google search will give a lot of varied answers, from simple steps to complex ways of cleaning air stones. (
https://www.google.com/search?q=cleaning+dwc+air+stones )
i think you can get it done by:
- scrub the stones in the reservoir water first while still the stones are still bubbling, i use a toothbrush but you could use something else.
- prepare a container big enough to drop all the stones in, and that you can add water to to just cover the stones keeping the plastic attachment just above the waterline.
- the mix I add to the container is: 30/70 white vinegar to water. 300ml vinegar + 700ml water for 1L mix.
- heat the mix first, when almost boiling then pour into the container with the stones & let that sit for a while (30 mins?).
- drain the mix, add fresh water and wash out the vinegar from the stones.
- replace with fresh water & hook the stones up to your air pump & let them bubble for a few minutes.
- replace water & repeat.
done.
could do this while changing water come to think of it...
FDP