How the Pirana System Works
The Pirana System uses air and biology to solve septic tank problems from within. Once fitted, it turns your existing tank into a living, self-regulating ecosystem that keeps itself clean and odour-free.
01
Simple Installation
A certified installer places the Pirana module directly into your septic tank using the existing access cover. There’s no need for digging or replacing the tank. The installation is quick, tidy, and typically completed within a single day.
02
Oxygen Activation
A small, quiet air pump outside the tank sends a gentle stream of air into the module. This air flow keeps water moving and delivers oxygen throughout the tank, transforming it from an anaerobic to an aerobic environment.
03
Bacterial Ecosystem Takes Over
With oxygen now available, aerobic bacteria multiply rapidly. These microbes are nature’s recyclers — they break down organic solids and convert waste into harmless by-products such as water and carbon dioxide.
04
Continuous Digestion
Unlike standard tanks that store waste until emptied, Pirana digests waste continuously. Solids never get the chance to build up, and the water leaving the tank (the effluent) is far cleaner and safer for the soil.
05
Clean Effluent Protects the Soakaway
The cleaner outflow contains fewer nutrients and suspended solids, so it doesn’t form the slimy biomat that typically blocks soakaways. This extends the life of your percolation area, prevents odours, and helps avoid costly drain-field failures.
06
Long-Term, Self-Sustaining Operation
Once running, the system maintains itself automatically. You’ll no longer need to schedule tank cleaning or emptying — the bacteria keep working around the clock. With minimal running costs and virtually no maintenance, Pirana offers decades of worry-free performance.
Everyday Operation
- Power: The air pump uses very little electricity (around 40–50 W).
- Noise: Quiet, comparable to a small aquarium pump.
- Maintenance: Occasional visual check of air flow; otherwise, fully automatic.
- Chemicals: Normal household cleaning products are fine in moderate use.
The Science in Action
- Aerobic digestion removes 90–95% of organic material.
- Reduced gas emissions (methane and nitrous oxide).
- Cleaner effluent supports soil health and groundwater protection.
Together, these effects make Pirana not just a wastewater upgrade — but an environmental improvement for your property and surrounding land.
At a Glance — The Pirana Cycle
- Waste enters the tank.
- Oxygen feeds the aerobic zone.
- Bacteria digest organic solids.
- Cleaner water exits to the soakaway.
- System repeats continuously.
- No more pump-outs or cleaning bills.
- Odour-free operation year-round.
- Restored drainage performance.
- Long-term environmental compliance.
