Bioscape CO2 Reactor with Solenoid and Diffuser

• No gas bottles or refill trips – CO2 comes from mixing citric acid and bicarbonate of soda with water in the reaction cylinder, both sold separately as Reagent A and Reagent B.
• Electronic solenoid – wire it to an aquarium light timer so CO2 runs only while the lights are on, rather than dosing around the clock.
• Diffuser included – unlike the On/Off Valve model, this one ships with a diffuser fitted, so gas goes straight into fine bubbles from day one.
• SUS304 stainless steel cylinder – built to withstand roughly ten times the pressure the reaction produces.
• Long runtime per charge – Bioscape rates one charge at roughly 60 days or more, running at one bubble per second.
• Pressure relief built in – the regulator releases gas automatically if pressure runs high.

Bioscape has not published the solenoid's voltage or wattage. Check with Bioscape or your retailer before pairing it with a third-party timer if load rating matters to you.

• Included: reaction cylinder, pressure regulator, contents gauge, needle valve, bubble counter, electronic solenoid valve, CO2 diffuser, fill funnel, and hosing.

• Not included: Reagent A (citric acid, 200 g) and Reagent B (sodium bicarbonate, 200 g), both sold separately and needed before the reactor can run; a timer to switch the solenoid – any standard aquarium light timer will do the job, but one isn't in the box.

Both reactors share the same cylinder, working pressure and rated runtime. The solenoid adds automation and the diffuser is one less thing to buy separately – that's the difference in price and complexity.

Bioscape's published figure is a single reference point: at one bubble per second, a charge lasts roughly 60 days or more. No full table of runtime against bubble rate has been published, so treat it as a guide – running the solenoid only during lighting hours, rather than continuously, will stretch a charge further than the 60-day figure, which assumes constant flow.

Add the citric acid and bicarbonate to the reaction cylinder through the supplied funnel, tilt the cylinder to roughly 45 degrees, then add the 300 mL of water. Screw the regulator and cylinder back together promptly without over-tightening. Fill the bubble counter with water and fit it to the fine adjustment valve. Wire the solenoid to your aquarium light timer so CO2 injection follows your photoperiod.

The solenoid is a delicate electronic component and can be damaged if forced – don't use excess force fitting or removing it. The cylinder walls get cold during the reaction, which is normal. The regulator's pressure relief valve releases gas automatically if pressure runs high. Mechanical damage from misuse isn't covered under warranty.

Bioscape's manual notes the desiccant beads inside can be dried out in an oven and reused once they change colour, and that all components should be kept dry when the reactor isn't in use. Check the diffuser's sintered disc periodically and clean it if bubbles start looking coarser than usual.

Covered for 12 months against manufacturing faults, on top of your consumer guarantee rights under Australian Consumer Law. This is a bulkier item and attracts additional freight, confirmed at checkout.

Do I need a gas bottle or a refill service to run this?

No. CO2 comes from mixing Reagent A (citric acid) and Reagent B (sodium bicarbonate) with water inside the cylinder – both reagents are sold separately.

Does it come with a diffuser?

Yes – this model includes a diffuser in the box, unlike the On/Off Valve model.

Does it come with a timer?

No. The solenoid is wired ready to connect to a standard aquarium light timer, but the timer itself isn't included.

What voltage does the solenoid run on?

Bioscape hasn't published this figure. Check with Bioscape or your retailer before wiring it into a third-party controller if the load rating matters for your setup.