Frequently Asked Questions About the Pirana System

Pirana is a compact, in-tank upgrade that transforms your existing septic tank into a self-cleaning wastewater treatment system. It introduces oxygen and special aerobic bacteria that break down organic waste before it builds up, meaning you’ll never have to clean or pump your tank again.

No. Once installed and operating correctly, the Pirana System eliminates the need for regular tank emptying. Instead of solids accumulating over time, they are digested naturally inside the tank, turning into harmless by-products such as water and carbon dioxide.

Yes — the Pirana System works with most domestic and small commercial septic tanks found across rural Ireland, including concrete and plastic types. Whether you have a single or dual-chamber design, Pirana can usually be fitted with minimal disruption.

Installation is fast and tidy — typically completed in one day. The module is fitted through your existing access cover, so there’s no digging or replacement of the tank. Once connected to power, the system begins working immediately.

A small air pump introduces oxygen into the Pirana module inside your tank. This oxygen supports a thriving colony of aerobic bacteria that continuously digest solids. Because the process is active 24/7, waste doesn’t build up, and your soakaway stays clear.

No — it’s extremely efficient. The air pump uses less power than a household light bulb (around 40–50 watts). Many homeowners find that the annual electricity cost is less than a single septic tank cleaning would have cost before installing Pirana.

Yes — and only for the better. You’ll notice cleaner, odour-free air around your tank, faster draining sinks and toilets, and no more wet or smelly patches near the soakaway. Over time, many systems even restore performance in struggling drain fields.

Not at all. The small air pump operates quietly — similar to an aquarium pump — and can be installed in a discreet outdoor location or shed. The system runs continuously but is barely noticeable in daily life.

Very little. Once running, the system looks after itself. The only moving part is the air pump, which may need replacing every 5–7 years. Homeowners are simply advised to keep power connected and avoid flushing harsh chemicals that could harm the bacteria.

Pirana dramatically improves wastewater quality before it leaves your tank. Cleaner effluent protects groundwater and nearby rivers, while the aerobic process reduces methane and nitrous oxide emissions. It’s a simple way to make your home part of Ireland’s green future.

Running costs are extremely low — typically less than €20–€30 per year in electricity. With no more pump-outs or soakaway repairs, most Irish homeowners recover their investment quickly through savings on maintenance and call-outs.

If your drain field is sluggish or backing up, Pirana can often help restore performance. By cleaning up the effluent and removing the solids that feed the biomat, the soil can begin to recover naturally. In many cases, it prevents the need for costly excavation or full replacement.