UP Aqua UA-G515 Tri-CO2 Regulator
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The UA-G515 solves one specific problem: feeding three aquariums from a single CO2 cylinder. Each of the three outlets carries its own flow control valve, so a shrimp tank on a whisper of gas and a heavily planted display can share one bottle. The regulator mounts on standard refillable cylinders and keeps the footprint modest despite the triple manifold.
Most useful to anyone running a rack of small tanks, breeders included, since one 5 lb bottle then covers the whole shelf. Users of a single aquarium gain nothing from the extra ports. The valves need patient balancing after any change, because opening one outlet shifts the others, and bubble counters for each line are usually bought separately.
Pros
- Three independent outlets with own valves
- One cylinder serves a rack of tanks
- Fits standard refillable CO2 cylinders
- Compact for a triple manifold
- Affordable next to modular manifolds
Cons
- Outlets interact, balancing takes patience
- Bubble counters often sold separately
- Pointless on a single aquarium
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