Bioscape CO2 Reagent A 200gms
Pack size
200 g
Fits
Bioscape CO2 Reactor with On/Off Valve (ARI10), Bioscape CO2 Reactor with Solenoid and Diffuser (ARI11)
Part no.
ARI21
Bioscape CO2 Reagent A 200gms
The citric acid half of Bioscape's CO2 reactor charge. Bioscape CO2 Reagent A is a 200 g pack of citric acid, one of the two dry compounds that react with water inside a Bioscape CO2 Reactor (ARI10 or ARI11) to generate a steady CO2 supply for planted tanks. It's sold on its own because reactors need re-charging repeatedly — buy it alongside Reagent B, since the reactor needs both together.
Key features
- Citric acid, 200 g — the acid half of Bioscape's two-part reagent reaction, matched to a single reactor recharge.
- Pairs with Reagent B — sodium bicarbonate, sold separately; the reactor needs both plus 300 mL of water to run.
- No gas bottles or cylinder refills — the whole point of Bioscape's reactor system is generating CO2 from these two compounds rather than sourcing compressed gas.
Specifications
| SKU | ARI21 |
|---|---|
| Barcode | 9327975042899 |
| Active ingredient | Citric acid, 200 g |
| Used with | Bioscape CO2 Reagent B (sodium bicarbonate, 200 g, sold separately) and 300 mL water |
| Fits | Bioscape CO2 Reactor with On/Off Valve (ARI10); Bioscape CO2 Reactor with Solenoid and Diffuser (ARI11) |
Which reactor does this fit?
Both Bioscape reactors — the ARI10 (on/off valve) and the ARI11 (solenoid and diffuser) — use the same reagent charge: this Reagent A plus Reagent B and water, per Bioscape's published CO2 generator manual.
Suitable for, and not suitable for
- Suitable for: recharging a Bioscape CO2 Reactor (ARI10 or ARI11) once a previous reagent charge is spent.
- Not suitable for: use on its own — citric acid alone doesn't generate CO2; it needs Reagent B and water in the reaction cylinder to react.
Dosage and directions
Add the full 200 g pack to the reaction cylinder alongside a 200 g pack of Reagent B, using the funnel supplied with the reactor. Tilt the cylinder to roughly 45 degrees before adding 300 mL of water, then reassemble the cylinder and regulator promptly without over-tightening.
Safety
Citric acid is a mild food-grade acid, but keep it away from eyes and out of reach of children, and don't mix it with anything other than Reagent B and water inside the reactor as directed. Store the pack dry and sealed.
Care and maintenance
Keep unused reagent dry and sealed between charges — Bioscape's manual notes that reactor components should be kept dry when the system isn't in use, and the same applies to stored reagent.
Warranty and delivery
Covered under your consumer guarantee rights under Australian Consumer Law if the pack arrives damaged or short-filled. Ships as a small parcel.
Common questions
Can I use this on its own without Reagent B?
No. Citric acid alone doesn't produce CO2 — it needs to react with Reagent B (sodium bicarbonate) and water inside the reactor.
How often will I need to buy this?
Bioscape rates one charge at roughly 60 days or more at one bubble per second, so budget a fresh pack of Reagent A and B roughly every two months at that rate — faster bubble rates will use a charge sooner.
Does this fit both Bioscape reactors?
Yes — the ARI10 and ARI11 use the same reagent charge.
