Storage of effluent is taking a whole new turn with an ECO BAG from Wieffering (EU) by TechniPharm . This great solution is not only very cost effective it also means you do need limited engineering as all is fully contained and you are fully covered for unwanted added rain water and objects which may get into the pond No issues with liner gas bubbles as this system is fully contained Less evaporation of valuable N , almost no smell and no crusting ever. System includes full mixing solutions. The principle of ECOBAG are simple and outlined in the information pack.. Effective storage N captured ( in open pond up to 60% goes up in smoke and evaporates as a greenhouse gas ( not yet an offence but will come as NZ severely lagging) Significant reduced or No smell (an issue now for many resource consents) Safe ( you can not fall into it (OSH) Easy install on all types of ground ( often an issue with alternative systems) Easy to expand, just put an other one next to what you already have, no need to rip up Reduced earthwork cost ( just an embankment) No engineering cost all drawings provided