Pro-SE
$149.99
- Max pressure
- 40 PSI2.7 bar
- Holds pressure to within
- about5 PSI
- Best for
- Most planted aquariums.
Why do we need CO2 in the aquarium?
In a planted aquarium, CO2 is the one nutrient the water cannot supply on its own. Inject it steadily and plants pearl, colours deepen and algae loses its head start.
Build your CO2 system
Seven questions about your aquarium, your cylinder and your filter, and you end with a system whose parts are made to fit each other. The price is the sum of the parts.
CO2Artists
A growing family of the world's best aquascapers, all proud to put CO2Art equipment at the heart of their work.
@aquascapebarendrecht
AquascapebarendrechtMother earth after the rescape, i'm thinking about a more mistic name for this tank.. Gaia is the one that comes up.14 Oct 2026
@aquascapebarendrechtAquascapebarendrecht
View on Instagram ↗
Mother earth after the rescape, i'm thinking about a more mistic name for this tank.. Gaia is the one that comes up.
Why?
Gaia represents the primordial goddess and the personification of Earth itself—a living, breathing organism where all natural elements exist in perfect ...Mother earth after the rescape, i'm thinking about a more mistic name for this tank.. Gaia is the one that comes up.
Why?
Gaia represents the primordial goddess and the personification of Earth itself—a living, breathing organism where all natural elements exist in perfect harmony.
This aquascape embodies that ancient, raw power. The intricate, reaching driftwood acts as the life veins of the landscape, seamlessly bridging the gap between the submerged world and the open air above. Anchored by dark stone and thriving greenery, Gaia showcases the resilience of nature. The vibrant colors of the small tetras and jewel-like Crystal Red shrimp represent the spark of life unfolding within this mystical sanctuary. It is an ode to balance, growth, and the untamed beauty of a living planet.
Day 4 after the 1st 70% water change the water is clearing up ,the first growth in the invitro plants is visible.
The existing plants doing well.
Day one nh4 1.0
No2 0.5
No3 0.5
ph 5.8 to 6
Gh 5
Kh 1
Tds 177
Today nh4 0.5
No2 0
No3 1.5
Ph 5.8 to 6
Gh 5
Kh 1
Tds 130
The 4 year old biomedia is running in the new filter and also used bacto turbo in the extra media, on the Lavasplit under the soil and on the wood so the bacteria can multiply fast at a high level.
I will wait till the nh4 and no2 stay at zero at least a few days before the fish and shrimps go back.
14 October 2026
@aquascapebarendrecht
AquascapebarendrechtThe Brands that run my shallow tank 90x45x28.12 Oct 2026
@aquascapebarendrechtAquascapebarendrecht
View on Instagram ↗
The Brands that run my shallow tank 90x45x28.
@skylightaquarium hyperbar fxl 75
@co2art Regulator
@aquael_world Filter
@jbl.de Inline heater
chihiros aquatic studio inline diffuser 19/25 ...
when CO2art will produce this big size diffuser i will definitely change it, b...The Brands that run my shallow tank 90x45x28.
@skylightaquarium hyperbar fxl 75
@co2art Regulator
@aquael_world Filter
@jbl.de Inline heater
chihiros aquatic studio inline diffuser 19/25 ...
when CO2art will produce this big size diffuser i will definitely change it, but for now this was the only one I found in this big hose size.
12 October 2026
@aquagold.goldysingh
Aquagold"Stay rooted, keep growing." 🌿2 Oct 2026
@aquagold.goldysinghAquagold
View on Instagram ↗
"Stay rooted, keep growing." 🌿
New light @azur_aqua_systems Beam Pro V2.0 is making all the difference — plants are showing amazing colors and growth! Slow and steady always works.
@masterline.ro fertilizer systems always give that extra boost my plants need.
Enjoy the beau..."Stay rooted, keep growing." 🌿
New light @azur_aqua_systems Beam Pro V2.0 is making all the difference — plants are showing amazing colors and growth! Slow and steady always works.
@masterline.ro fertilizer systems always give that extra boost my plants need.
Enjoy the beauty of aquatic plants. Happy weekend, everyone!
CO2 system @co2art
Biomaster thermo 250 @oase_global
#plantedtank #aquascaping #aquaticplants #aquascape #weekendvibes
2 October 2026
@earl_scapes
Daniel EarlColours 🌿🍁🍂🌿28 Sep 2026
@earl_scapesDaniel Earl
View on Instagram ↗
Colours 🌿🍁🍂🌿
With a fresh background paint job, the plants/fish and shrimp are popping!!!
Tank @superfish.aquadistri
Co2 @co2art
Light @aquaoneuk
Filter @oase_global
Ferts @2hraquarist
#aquas
28 September 2026
@vale.aquascaper
Felipe Dias de Camargo📦🌿 UNBOXING CO2ART!21 Sep 2026
@vale.aquascaperFelipe Dias de Camargo
View on Instagram ↗
📦🌿 UNBOXING CO2ART!
Chegou mais uma peça essencial para elevar o nível do aquascaping! 💚 Hoje é dia de conhecer de perto a válvula/regulador de CO₂ da CO2Art — construção robusta, precisão e controle para manter o CO₂ estável no aquário. 🌱💨
Muito obrigado à CO2Art pelo apoio...📦🌿 UNBOXING CO2ART!
Chegou mais uma peça essencial para elevar o nível do aquascaping! 💚 Hoje é dia de conhecer de perto a válvula/regulador de CO₂ da CO2Art — construção robusta, precisão e controle para manter o CO₂ estável no aquário. 🌱💨
Muito obrigado à CO2Art pelo apoio e parceria! 🙏🔥
#CO2Art #Aquascaping #Aquascape #PlantedTank #PlantedAquarium CO2Injection CO2Regulator AquariumPlants NatureAquarium Aquascaper Unboxing Aquarium Plantedaquarium ValeAquascaper
21 September 2026
@aquagold.goldysingh
Aquagold"Small daily care creates a lifetime of love."14 Sep 2026
@aquagold.goldysinghAquagold
View on Instagram ↗
"Small daily care creates a lifetime of love."
🌿 WEEKLY UPDATE | My High-Tech Planted Aquarium! 💡🐠
A quick look at this week’s progress on my new high-tech planted aquarium setup! 🌱✨
Watch the plants grow, colors develop, and the aquascape slowly comes to life. 💚
If you lov..."Small daily care creates a lifetime of love."
🌿 WEEKLY UPDATE | My High-Tech Planted Aquarium! 💡🐠
A quick look at this week’s progress on my new high-tech planted aquarium setup! 🌱✨
Watch the plants grow, colors develop, and the aquascape slowly comes to life. 💚
If you love aquascaping, planted tanks & high-tech aquariums, follow along for weekly updates! 🔥
Happy aquascaping, everyone.
Light @azur_aqua_systems
Fluval soil @aquadesire_official
CO2 @co2art
Filter @aquaticremediesindia
Hardscape @petzlifeworld_official
Plants @ohm_let_shoppe @petkraftz
Fertilizer & Gh Booster @aqua_matsya
Ro water @arkaaquatics
Water care @microbelift @enviroaquaria
Tank @glass.b0xx
#aquariumhobby #plantedtanks #aquascaping #trending #freshwateraquarium
14 September 2026
@dnoerholm
David NorholmThe aquascape20 Aug 2026
@dnoerholmDavid Norholm
View on Instagram ↗
The aquascape
This scape has been running for more than 2 years now. My longest living aquarium setup.
But in a couple of months it'll be replaced by something new!
CO2 is: @co2art
Light is: @skylightaquarium
Plants are: @tropicaaquariumplants
Hardscape is: @wio.eco
#aquas...The aquascape
This scape has been running for more than 2 years now. My longest living aquarium setup.
But in a couple of months it'll be replaced by something new!
CO2 is: @co2art
Light is: @skylightaquarium
Plants are: @tropicaaquariumplants
Hardscape is: @wio.eco
#aquascaping #akvarium #natureaquarium #naturalaquarium #aquariumphotography
20 August 2026
@aquascaperman
Fahrettin Akay#aquarium8 Aug 2026
@aquascapermanFahrettin Akay
View on Instagram ↗
#aquarium
@chihirosaquaticstudio @2hraquarist @eheim_official @co2art
8 August 2026
Tag your aquarium #co2artartist — every tile is the creator's own post, credited and linked.
Dual-stage regulators
Pro-SE or Pro-Elite?
Both are dual-stage, so the pressure does not surge when the cylinder runs low, the fault single-stage regulators are known for. The difference is how much pressure they give you, and how steadily they hold it.
Pro-Elite V2
$269.99
- Max pressure
- 80 PSI5.5 bar
- Holds pressure to within
- about1 PSI
- Best for
- Several aquariums off one cylinder, manifolds, and the steadiest bubble count.
Complete kits
Regulator, diffuser, tubing, drop checker and the small parts, made to fit each other. Pick by regulator and by diffuser.
Pro-SE with in-tank diffuserPRO-SE regulator + Bazooka Flux diffuser$209.95
Pro-SE with inline diffuserPRO-SE regulator + inline diffuser for the filter hose$221.96
Pro-Elite with in-tank diffuserPro-Elite V2 regulator + Bazooka Flux diffuser$329.95
Pro-Elite with inline diffuserPro-Elite V2 regulator + inline diffuser for the filter hose$341.96
Prefer to choose part by part? Build your system.
Best sellers
The regulators, diffusers and drop checkers most aquascapers start with.
Save 17%
Sale priceFrom $23.99Regular price
$28.99
Save 38%
NEW IO Diffuser - Acrylic Series - In-Tank CO2 Diffuser
Sale priceFrom $19.99Regular price
$31.99
Save 32%
New Pro-Series Precision CO2 Check Valve
Sale price$12.99Regular price
$18.99
Follow us on Instagram
@co2art_us
CO2Art USA CO2 cylinder does not run out quietly.11 Oct 2026
@co2art_us
CO2Art USEvery ripple you add to the surface costs you CO2.9 Oct 2026
@co2art_us
CO2Art USMost of the eels in freshwater tanks are not eels at all.8 Oct 2026
@co2art_us
CO2Art USYour drop checker is an hour or two behind your tank.7 Oct 2026
@co2art_us
CO2Art USHow many bubbles per second does your planted tank need?3 Oct 2026
@co2art_us
CO2Art USYour fish breathe out CO2 all day — is that enough for your plants?2 Oct 2026
@co2art_us
CO2Art USOne more weekend to get your scape photographed.1 Oct 2026
@co2art_us
CO2Art USThose tiny bubbles streaming off your leaves in the afternoon have a name: pearling.30 Sep 2026