{"title":"CO2 \u0026 Diffusers","description":null,"products":[{"product_id":"aquario-neo-mixer","title":"Aquario Neo Mixer","description":"\u003cp\u003eAn inline CO2 diffuser that mixes gas into your return flow instead of relying on a bubble counter and hope.\u003c\/p\u003e\u003cp\u003eA bubble counter (the small chamber that shows CO2 — carbon dioxide, the gas plants feed on — as countable bubbles) dripping CO2 into the tank looks satisfying, but a good chunk of every bubble rises straight to the surface and escapes before the plants get to use it. An inline mixer avoids that by dissolving CO2 into the water while it's still moving through sealed tubing, so far less of it is wasted.\u003c\/p\u003e\u003cp\u003eThe Neo Mixer fits inline on your filter's return line — plumbed into the hose itself, outside the tank — an 8mm-diameter body that diffuses CO2 into the flow as it's pumped back into the tank, so the gas is already dissolved by the time the water reaches the aquarium, rather than needing to dissolve from a stream of rising bubbles.\u003c\/p\u003e\u003cp\u003eM and L connections (≈13mm and ≈17mm respectively) to match your return line. The Mixer's job is diffusion — dissolving CO2 into your return flow — rather than supplying the CO2 itself, so it's designed to work as part of a CO2 setup alongside a cylinder, regulator (the valve gear that meters the gas out of the cylinder) and solenoid (an electric valve that switches the gas on and off, usually with the lights).\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInline CO2 mixer — diffuses gas into the return flow instead of losing it to surface bubbles\u003c\/li\u003e\n\u003cli\u003e8mm-diameter body; connects at ≈13mm (M) or ≈17mm (L)\u003c\/li\u003e\n\u003cli\u003eFits inline on the filter's return line, dissolving CO2 in as part of a wider CO2 setup\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aquario","offers":[{"title":"M","offer_id":52798388470072,"sku":"D-NEO MIXER M","price":40.5,"currency_code":"AUD","in_stock":true},{"title":"L","offer_id":52798388502840,"sku":"D-NEO MIXER L","price":40.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3339\/6280\/files\/neo-mixer.jpg?v=1786596367"},{"product_id":"aquario-neo-co2","title":"Aquario Neo CO2","description":"\u003cp\u003eA bacterial CO2 generator that gives small-to-medium planted tanks a steady CO2 boost — no pressurised gas, no regulator, and a proper step up from a homemade sugar-and-yeast bottle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCO2\u003c\/strong\u003e (carbon dioxide) is the gas plants feed on, and adding more of it speeds plant growth — high-tech setups inject it from a pressurised bottle through a regulator (the valve gear that meters the gas out). The Aquario Neo CO2 skips all of that: it runs on a stabilised Saccharomyces cerevisiae (yeast) culture held in a nutrient-jelly cartridge, not a pressurised cylinder. Fermentation happens right at the jelly-to-water interface, which is the trick that sets it apart from a DIY bottle rig — output stays steadier over the cartridge's life instead of surging in the first few days and tapering off from there — that's Aquario's positioning versus a DIY rig, not a comparison we've independently tested.\u003c\/p\u003e\u003cp\u003eIt's built for roughly 10–30 US gallon tanks (approx. 38–114 L), and each bio-cartridge is rated for around 50–60 days before it needs replacing, depending on how warm your room runs. The kit comes complete: hose, diffuser (the piece that breaks the gas into fine bubbles so it dissolves in the water), cap, and one bio-refill cartridge to get you started.\u003c\/p\u003e\u003cp\u003eWorth being upfront about what this is and isn't. It's a genuine, no-fuss CO2 boost for a nano (very small) or small planted tank — no pressure vessel, no regulator, no bubble-counter fiddling (the little chamber used to count gas bubbles per second on bottle systems). It is not a substitute for a full bottle-and-regulator CO2 system if you're running a larger tank or CO2-hungry high-tech plants — species that only really thrive with injected gas; output is modest by comparison.\u003c\/p\u003e\u003cp\u003eOne naming note, because the two get mixed up: this Neo CO2 is a bacterial CO2 generator, not to be confused with Neo C — Aquario's dechlorinator\/water conditioner (the product that makes tap water safe), stocked separately in our Water Conditioners collection. Similar names, completely different jobs.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBacterial (yeast-culture) CO2 generation in a nutrient-jelly cartridge — no pressurised gas, no regulator\u003c\/li\u003e\n\u003cli\u003eSteadier fermentation than a DIY sugar-and-yeast bottle, thanks to jelly\/water-interface fermentation — not independently tested against a DIY rig\u003c\/li\u003e\n\u003cli\u003eSuits roughly 10–30 US gallon tanks (approx. 38–114 L)\u003c\/li\u003e\n\u003cli\u003eBio-cartridge rated approx. 50–60 days, depending on room temperature\u003c\/li\u003e\n\u003cli\u003eKit includes hose, diffuser, cap and one bio-refill cartridge\u003c\/li\u003e\n\u003cli\u003eNot the same product as Neo C (our dechlorinator\/water conditioner) — similar name, different job, different collection\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aquario","offers":[{"title":"Default Title","offer_id":52798389977400,"sku":"D-NEO CO2","price":46.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3339\/6280\/files\/neo-co2.jpg?v=1786596378"},{"product_id":"aquario-neo-co2-refill","title":"Aquario Neo CO2 Refill","description":"\u003cp\u003eThe bio-cartridge refill for your Aquario Neo CO2 generator — same steady yeast-culture fermentation, ready to swap in the moment the old one's spent.\u003c\/p\u003e\u003cp\u003eThe Neo CO2 generator brews CO2 (carbon dioxide — the gas plants feed on) from a yeast culture instead of a pressurised bottle. This is the Biorefill cartridge for it: the same stabilised yeast-culture nutrient jelly, in the same format, rated for roughly the same 50–60 days depending on room temperature. You reuse your existing hose, diffuser (the piece that breaks the gas into fine bubbles) and cap — this listing is the cartridge only.\u003c\/p\u003e\u003cp\u003eNew to Neo CO2? Grab the Aquario Neo CO2 kit first, which includes the generator hardware plus your first cartridge; come back here when it's time to replace it.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eGenuine replacement bio-cartridge for the Aquario Neo CO2 generator\u003c\/li\u003e\n\u003cli\u003eSame stabilised yeast-culture nutrient jelly, rated approx. 50–60 days\u003c\/li\u003e\n\u003cli\u003eReuses your existing hose, diffuser and cap — cartridge only, no hardware included\u003c\/li\u003e\n\u003cli\u003ePair with the Aquario Neo CO2 kit if you're starting from scratch\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aquario","offers":[{"title":"Default Title","offer_id":52798390337848,"sku":"D-NEO CO2 REFILL","price":22.5,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3339\/6280\/files\/neo-co2-refill.jpg?v=1786596381"},{"product_id":"aquario-neo-diffuser-normal-special","title":"Aquario Neo Diffuser Normal Special","description":"\u003cp\u003eA clear acrylic, fine-mist CO2 diffuser that shears gas into a genuine mist rather than coarse bubbles, for noticeably better dissolution — sized S\/M\/L to match your tank.\u003c\/p\u003e\u003cp\u003eThe Normal Special is Aquario's straight-body diffuser (the piece that breaks pressurised gas into fine bubbles): a clear acrylic housing over a fine, ceramic-style membrane. Instead of the handful of large bubbles you get from a basic diffuser, CO2 (carbon dioxide — the gas plants feed on) is sheared into a fine mist, which gives it far more surface area and far more time in the water column (the open water) before it reaches the surface — the main lever for actually getting CO2 into solution (properly dissolved into the water) rather than straight out through your lid.\u003c\/p\u003e\u003cp\u003eSoak the membrane for 10–30 minutes before first use; this fines up the bubble size noticeably compared with using it straight out of the packet. Choose your size against your tank volume below — going too small for your tank just means running the diffuser harder than it likes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFine ceramic-style membrane shears CO2 into a true mist, not coarse bubbles, for better dissolution\u003c\/li\u003e\n\u003cli\u003eSoak 10–30 minutes before first use for the finest bubble size\u003c\/li\u003e\n\u003cli\u003eClear acrylic straight body, low-profile in the tank\u003c\/li\u003e\n\u003cli\u003eSizing: S = 12mm diameter (~100L tanks) · M = 17mm diameter (100–200L) · L = 24mm diameter (200L+)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aquario","offers":[{"title":"S","offer_id":52798393057592,"sku":"D-NEO DIFFUSER NORMAL SPECIAL SM","price":23.0,"currency_code":"AUD","in_stock":true},{"title":"M","offer_id":52798393090360,"sku":"D-NEO DIFFUSER NORMAL SPECIAL ME","price":28.25,"currency_code":"AUD","in_stock":true},{"title":"L","offer_id":52798393123128,"sku":"D-NEO DIFFUSER NORMAL SPECIAL LA","price":31.75,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3339\/6280\/files\/neo-diffuser-normal-special.jpg?v=1786596384"},{"product_id":"aquario-neo-diffuser-curved-tiny","title":"Aquario Neo Diffuser Curved Tiny","description":"\u003cp\u003eThe same fine-mist membrane as our Normal diffusers, but with a factory pre-bent inlet tube that hooks straight over the tank rim — no hose clips needed. New to our range.\u003c\/p\u003e\u003cp\u003eThe Curved Tiny takes the same fine ceramic-style membrane as the Normal line — the part that shears CO2 (carbon dioxide, the gas plants feed on) into a fine mist of tiny bubbles so it dissolves readily — and mounts it on a tube that's pre-bent at the factory, so it hooks directly over the rim of the tank instead of needing to be clipped in place. It's a tidier, more self-contained install, particularly nice on nano (very small) and small aquascapes (planted layouts) where you'd rather not see a clip and a length of straight tubing running down the glass.\u003c\/p\u003e\u003cp\u003eIt's a genuinely new line for us — same fine-mist CO2 performance as the rest of the Neo range, just a neater way to mount it. Choose SS for the smallest nano setups or Tiny for a touch more tank.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSame fine ceramic-style membrane as the Normal range — a true mist, not coarse bubbles\u003c\/li\u003e\n\u003cli\u003eInlet tube is factory pre-bent to hook over the rim — no hose clips needed\u003c\/li\u003e\n\u003cli\u003eNeat, low-visibility mount, well suited to nano and small aquascapes\u003c\/li\u003e\n\u003cli\u003eSizing: SS = 15cm length, 6mm clip width · Tiny = 23cm length, 9mm clip width\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aquario","offers":[{"title":"SS","offer_id":52798393155896,"sku":"D-NEO CURVED TINY SS","price":30.0,"currency_code":"AUD","in_stock":true},{"title":"Tiny","offer_id":52798393188664,"sku":"D-NEO CURVED TINY","price":30.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3339\/6280\/files\/aquario-neo-diffuser-curved-tiny.jpg?v=1786681265"},{"product_id":"aquario-neo-diffuser-curved-special","title":"Aquario Neo Diffuser Curved Special","description":"\u003cp\u003eThe curved, rim-mounting design of our Curved Tiny, scaled up to Special sizing for standard and larger planted tanks.\u003c\/p\u003e\u003cp\u003eCurved Special carries the same idea as the Curved Tiny — a factory pre-bent inlet tube that hooks over the tank rim so there's no hose clip in view — but built to the larger Special sizing, the same S\/M\/L range as our Normal Special diffuser. You get the fine ceramic-style membrane and true-mist CO2 shearing — CO2 (carbon dioxide, the gas plants feed on) leaves the membrane as a mist of tiny bubbles that dissolve more readily than large ones — across the whole Neo diffuser range, just with a mounting style that suits tanks where you don't want visible hardware.\u003c\/p\u003e\u003cp\u003eMatch the size to your tank volume below; the numbers are the same diameters and volumes as the Normal Special line, just with the curved, clip-free mount.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSame fine ceramic-style membrane and CO2-shearing action as the rest of the Neo range\u003c\/li\u003e\n\u003cli\u003eFactory pre-bent inlet tube hooks over the tank rim — no hose clips needed\u003c\/li\u003e\n\u003cli\u003eClean, low-profile mount for aquascapes (planted layouts) where you'd rather not see hardware\u003c\/li\u003e\n\u003cli\u003eSizing: S = 12mm diameter (~100L) · M = 17mm diameter (100–200L) · L = 24mm diameter (200L+)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aquario","offers":[{"title":"S","offer_id":52798394564920,"sku":"D-NEO DIFFUSER CURVED SPECIAL S","price":30.0,"currency_code":"AUD","in_stock":true},{"title":"M","offer_id":52798394597688,"sku":"D-NEO DIFFUSER CURVED SPECIAL M","price":37.25,"currency_code":"AUD","in_stock":true},{"title":"L","offer_id":52798394630456,"sku":"D-NEO DIFFUSER CURVED SPECIAL L","price":42.25,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3339\/6280\/files\/neo-diffuser-curved-special.jpg?v=1786596386"},{"product_id":"aquario-neo-diffuser-normal-tiny","title":"Aquario Neo Diffuser Normal Tiny","description":"\u003cp\u003eThe smallest diffuser in the Neo range, purpose-built for nano tanks (very small aquariums) that a standard-sized diffuser would simply overwhelm.\u003c\/p\u003e\u003cp\u003eNormal Tiny is the straight-body diffuser (the piece that breaks CO2 — carbon dioxide, the gas plants feed on — into fine bubbles) scaled right down: about 8mm in diameter and 15cm tall, sized for tanks up to roughly 50L rather than shoehorning a full-size diffuser into a nano setup. It carries the same fine, ceramic-style membrane as the rest of the Neo range, so you still get a genuine mist rather than coarse bubbles — just proportioned for a small footprint.\u003c\/p\u003e\u003cp\u003eA straightforward pick if you're running CO2 on a nano or small planted tank and want the diffuser itself to disappear into the aquascape (the planted layout) rather than dominate it.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSame fine ceramic-style membrane as the rest of the Neo range, scaled down for nano tanks\u003c\/li\u003e\n\u003cli\u003eCompact: approx. 8mm diameter, 15cm height\u003c\/li\u003e\n\u003cli\u003eSuits tanks up to approx. 50L\u003c\/li\u003e\n\u003cli\u003eStraight-body design, single size\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aquario","offers":[{"title":"Default Title","offer_id":52798395253048,"sku":"D-NEO NORMAL TINY","price":18.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3339\/6280\/files\/aquario-neo-diffuser-normal-tiny.jpg?v=1786681265"},{"product_id":"aquario-neo-air-normal-special","title":"Aquario Neo Air Normal Special","description":"\u003cp\u003eThe same fine-membrane diffusion behind our CO2 range, tuned for an air pump instead — much finer bubbles than a standard airstone, with less noise and splash.\u003c\/p\u003e\u003cp\u003eAir Normal Special uses the same fine ceramic-style membrane technology as the CO2 diffusers above (a diffuser breaks gas into very fine bubbles so more of it dissolves in the water), but built for a standard air pump line rather than CO2 (carbon dioxide). The result is a much finer bubble than you'd get from a typical airstone (the porous block on the end of an air line that makes bubbles), which means better oxygen transfer for the same airflow, plus noticeably less of the rattling noise and surface splash that coarser airstones tend to produce.\u003c\/p\u003e\u003cp\u003eIt's a good fit for overnight aeration (bubbling air through the tank to keep oxygen levels up) in a shrimp tank, or as the air source feeding a sponge filter (a simple foam filter driven by rising air bubbles), where quiet, fine, even bubbles matter more than raw airflow. Available in M and L to suit different tank sizes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFine membrane produces much smaller bubbles than a standard airstone — better O2 transfer, less noise and splash\u003c\/li\u003e\n\u003cli\u003eWell suited to overnight aeration in a shrimp tank, or driving a sponge filter\u003c\/li\u003e\n\u003cli\u003eM: 17mm diameter, 28cm length, 9mm clip\u003c\/li\u003e\n\u003cli\u003eL: 24mm diameter, 34cm length, 12mm clip\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aquario","offers":[{"title":"M","offer_id":52798396596536,"sku":"D-NEO AIR NORMAL SPECIAL M","price":28.25,"currency_code":"AUD","in_stock":true},{"title":"L","offer_id":52798396629304,"sku":"D-NEO AIR NORMAL SPECIAL L","price":31.75,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/3339\/6280\/files\/neo-air-normal-special.jpg?v=1786596389"}],"url":"https:\/\/shrimpzone.com.au\/collections\/co2.oembed","provider":"Shrimp Zone ","version":"1.0","type":"link"}