| |
GRO |
DS-Mini |
PRO-DS |
| Best For |
Aquarists seeking streamlined, precision CO2 control, compact installation, and straightforward operation |
Aquarists seeking compact dual-stage pressure regulation with modular multi-aquarium capability |
Aquarists seeking full-size dual-stage architecture, expanded working-pressure capability, dual-gauge monitoring, and modular scalability |
| Why Choose It? |
Streamlined, precise, and highly capable with multiple cylinder configurations and optional multi-aquarium expansion |
Dual-stage pressure regulation and modular expandability in a compact footprint |
Full-size dual-stage platform with 0–140 PSI output, dual gauges, and flexible modular configuration |
| Pressure Reduction |
Piston |
Dual-stage |
Dual-stage |
| Pressure Monitoring |
Integrated working-pressure gauge |
Integrated working-pressure gauge |
Separate cylinder-pressure and working-pressure gauges |
| CO2 Source / Installation |
CGA-320, DIN477, paintball, or 74g disposable cartridge configurations |
CGA-320 or international DIN477 configuration |
CGA-320 or international DIN477 configuration |
| Expandability |
Optional GRO CO2 Splitter for multiple aquariums |
Modular manifold system with 1–6 independently controlled outputs |
Modular manifold system with 1–6 independently controlled outputs |
| CO2 Distribution |
Standard single-aquarium configuration; expandable to multiple aquariums with optional splitter |
1–6 independently controlled aquarium outputs |
1–6 independently controlled aquarium outputs |
| Working / Output Pressure |
0–70 PSI |
0–60 PSI |
0–140 PSI |
| Integrated Solenoid |
Yes |
Yes |
Yes |
| Precision Needle Valve |
Yes |
Yes — one per manifold output |
Yes — one per manifold output |
| Inspection & Testing |
Inspected, pressure tested, and leak checked in the USA |
Inspected, pressure tested, and leak checked in the USA |
Inspected, pressure tested, and leak checked in the USA |
| GLA Limited Lifetime Warranty |
Yes |
Yes |
Yes |
| Lifetime Support |
Yes |
Yes |
Yes |
| Starting At |
$125 |
$200 |
$250 |
| |
Shop GRO |
Shop DS-Mini |
Shop PRO-DS |
