POSITIVE AQUA CONDITIONERS ™ takes a fresh look at aerators  and agitators designs to overcome the traditional inefficient ‘top down’ induction approach to save energy.

Aeration is extremely important when growing and harvesting fish. In order to operate a successful aquaculture facility, you must maintain a high enough dissolved oxygen (DO) to keep the fish healthy and active as active fish grow larger. Aeration cost is the third largest cost in intensive aquaculture system after post larvae and feed cost representing about 15% of total production cost. Therefore, selection of aerators plays a major role in maximising the profit in such system.


Pas-AQ™ is neither an aerator nor an agitator, it’s a Thermal De-Stratifier with the ability to deliver large amounts of dissolved oxygen and hydronium irons throughout the water body using minimum energy inputs.     
Designed specifically for aquaculture applications, Pas-AQ™is fitted with a patented intake fixture that draws water from the bottom of the pond through a directional cone to allow  juvenile stock to pass by uninhibited.

How does Pas-AQ™ work?

Described simply, Pas-AQ™ draws water from the bottom zone through a hydronium ion generator into a gas fluid aspirator. This provides favourable vertical thermohaline circulation and surface movement to  maximise oxygenation with minimum energy inputs. The positively charged dispersal of hydronium ions help flocculate suspended particles thorough out the body of water. While the downward movement of water within the water column assist in the coagulation of solids and eliminate algae blooms by pulling cells down below the photozone. Bottom fluid movement enables natural bacteria to digest organic sludge and free trapped ammonia and nitrogen gases for oxidisation. 

How can Pas-AQ™ help?

The Pas-AQ™ thermal de-stratifier is suited to a range of aquaculture and mariculture. Whether it’s a new application or the replacement of under-performing system, the Pas-AQ™is the most efficient low cost solution in oxygenation and de-stratification. When compared to standard paddlewheel, vortex, hose diffusion, or aspirating aerators, Pas-AQ™ is far more efficient and less costly to operate with savings upwards of USD$300 per month in electricity consumption when used in conjunction with intelligent control systems.

Pas-AQ™ fine bubble bottom up aeration has the ability to reach and maintain a higher dissolved oxygen content spread uniformly across the entire facility. Higher dissolved oxygen content results in healthier and more active fish and active fish grow larger, which creates a larger yield at the end of the growth cycle.


Bottom up aeration also allows any gases or loose sediment that normally decreases the quality of the water in the lower layers of the pond are released into the oxygen-rich layers where they can be broken down. This results in a pond where the entirety of the water column is comfortably liveable for the fish. In many facilities where paddle wheels are used, there are dead zones in the water that do not receive proper aeration and mixing. An overall higher water quality results in healthier fish, which in turn will grow larger.


Pas-AQ™ optional intelligent control and reporting systems include telemetric abilities which enable you or our technical teams to remotely monitor, diagnose and troubleshoot dissolved oxygen and biological issues irrespective of their geographical location. 

Figure 1. Pas-AQ™ destratification unit