Aqua One 50mm ceramic ball air stone in its retail pack

Ceramic Ball Air Stone 50mm by Aqua One — Fine-Bubble Diffuser for Reservoirs and DWC

AO-AIR-STONE-50

$9.95
/
Tax included. Shipping calculated at checkout.

A 50mm ceramic ball air stone from Aqua One. It goes on the end of your air pump's airline and puts a steady stream of fine bubbles through a reservoir, bucket or tank.

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Pairs well with

Still water in a reservoir goes stale fast. An air stone breaks the air from your pump into fine bubbles that keep the water moving and carry oxygen through it, and this one from Aqua One does the job with a 50mm ceramic ball. Push it onto the airline from your air pump, drop it into a nutrient reservoir, DWC bucket or aquarium, and let it bubble away. It's a simple, cheap part with two things to know: it needs an air pump to run, and like every air stone it slowly clogs with mineral and nutrient build-up, so plan to clean it or keep a spare.

Fine, even bubblesCeramic breaks the air into a fine, steady stream rather than the big gulps you get from an open airline end.
Under ten bucksCheap enough to keep a spare in the drawer, so a clogged stone never holds up a reservoir change.
Aquarium part, hydro jobMade by Aqua One for fish tanks, and just as handy in a nutrient reservoir or DWC bucket.
Same brand as the pumpPairs with the Aqua One Precision air pumps and check valves we stock.

Specifications
Brand: Aqua One
Type: Ceramic ball air stone
Diameter: 50mm
Airline spigot: 4mm
Material: Ceramic
In the pack: 1 air stone
Runs from: An air pump and airline, sold separately
Suits: Nutrient reservoirs, DWC buckets and aquariums

Grower's Tip
  • Fit a check valve in the airline outside the reservoir, so water can't siphon back down the line into the pump if the power drops.
  • Sit the pump above the water line where you can, for the same reason.
  • When the bubbles turn coarse or patchy, the stone is clogging. Clean it or swap in a spare.
  • Rinse the stone whenever you clean the reservoir between crops.
  • Bigger tanks need more air. Run more than one stone from a pump with enough outlets.

How To Set It Up
1Cut a length of 4mm airline long enough to reach from your air pump to the bottom of the reservoir.
2Push one end onto the air stone's spigot and the other onto the pump outlet, with a check valve in the line between them.
3Drop the stone into the reservoir so it sits near the bottom.
4Switch the pump on and check for a steady, even stream of fine bubbles.
5Clean or replace the stone when the bubbles turn coarse or patchy.

Pairs Well With

Frequently Asked Questions
Does the air stone need an air pump?

Yes. It has no motor of its own. It breaks up the air your pump pushes down the airline.

Can I use an aquarium air stone in a hydroponic reservoir?

Yes. It's sold for aquariums, and it does the same job in a nutrient reservoir or DWC bucket.

What size is it?

50mm across: a ceramic ball on a short spigot that the airline pushes onto.

What size airline does it take?

4mm. The spigot takes standard 4mm airline or flexi tubing.

Does it come with airline or a pump?

No. You get the air stone only. The pump, airline and check valve are sold separately.

Do air stones wear out?

Yes, in the sense that they clog. Minerals and nutrient residue slowly block the pores and the bubbles get coarser, so clean it or replace it.

Do I need a check valve?

Yes, we'd fit one. A check valve stops water running back down the airline into your pump if the power goes off.

Keep Your Reservoir Moving

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Order by 2pm and it ships the same business day from Invermay, Tasmania.

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