Bioscape Mineral Round Airstone 30 x 30mm
Pack size
1 (single)
Water type
Freshwater + Marine
Bioscape Mineral Round Airstone 30 x 30mm
A broader bubble column from a single round stone. The Bioscape Round Mineral Airstone 30 x 30mm breaks pump air into a broad, even column of fine bubbles — a wider footprint than a standard cylindrical stone, suited to larger tanks or a dedicated feature-aeration spot. It works in freshwater and marine aquariums.
Key features
- Broad bubble column — the round shape spreads the bubble curtain wider than a standard cylindrical airstone.
- Fine, even mist — the mineral stone structure produces a finer mist than a plain plastic diffuser.
- Fresh or marine — the mineral material doesn't react with saltwater, so the same stone works in either setup.
- Runs off any standard air pump — no proprietary fitting or driver required.
Specifications
| Size | Shape | Water type | Requires (not included) |
|---|---|---|---|
| 30 x 30 mm | Round | Freshwater and marine | Air pump, airline tubing, check valve |
Which airstone do I need?
This round stone is the widest-footprint option in Bioscape's mineral airstone range — reach for it when a standard cylindrical stone isn't giving enough bubble coverage across a larger tank.
| Airstone | Shape | Pack size | Best for |
|---|---|---|---|
| Mineral Airstone 25mm 3 Pack | Standard cylindrical, 25 mm | 3 | General-purpose aeration with spares on hand |
| Round Airstone 30x30mm | Round, 30 x 30 mm | 1 | A wider bubble column for larger tanks or a feature aeration spot |
| Slim Airstones Carded 3 Pack | Slim profile | 3 | Tight spaces behind hardscape, filter intakes or planted aquascapes |
Suitable for, and not suitable for
Suitable for larger tanks or feature aeration spots in freshwater and marine aquariums running a standard air pump. Not a substitute for mechanical or biological filtration, and not useful on its own without a pump.
Care and maintenance
Mineral airstones clog gradually as mineral deposits and biofilm build up, and the bubble stream coarsens as that happens. Bioscape doesn't publish a fixed replacement interval — watch for a coarser or uneven bubble pattern as the sign to replace it. Because this is sold as a single stone rather than a card of three, it's worth keeping a spare on hand, or choosing the 3-pack range if you're running several airstones.
Goes well with
Needs an air pump sized to your tank and how many stones or ornaments it runs, plus airline tubing to connect them. A check valve fitted in the line stops water siphoning back into the pump during a power cut.
Warranty and delivery
Covered against manufacturing defects under Bioscape's warranty, in addition to your rights under Australian Consumer Law. Ships by standard parcel post.
Common questions
Why choose the round stone over a standard airstone?
Its round shape spreads bubbles across a wider footprint than a standard cylindrical stone, which suits larger tanks or a dedicated feature-aeration spot better than a narrow bubble column.
Will this work in a saltwater tank?
Yes. The mineral stone doesn't react with saltwater, so it suits freshwater and marine setups.
Does it come with spares?
No — this is sold as a single stone. Bioscape's 3-pack ranges are worth choosing instead if you want spares on hand.
How do I know when to replace it?
When the bubble stream turns coarse or uneven instead of a fine mist.
