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Grey water on gardens
Staycalm wrote:
I'm interested in some low cost solutions to using our grey water. Anyone got any hints on how to go about it? Good website references would help too. http://www.greywaterreuse.com.au/ I attended a saturday workshop with Ross, and he really knows his stuff. Essentially (from memory): * don't use greywater from your kitchen sink. This water probably accounts for less than 10% of your greywater production, but the grease and crud in your sink water will probably give you 90% of the problems * don't use on your vege garden. That is the official word, although lots of people do. As long as you are using drippers it is probably fine, maybe not for root veg * if you can use a gravity feed system it will save you a great deal in setup and maintenance costs * don't mix greywater with rainwater * don't save your greywater too long. Empty the tank daily is ideal, although your plants are probably better off on a 3 day cycle. Perhaps if you rotate the watering zone... * your greywater collection system must overflow back into the sewer * other stuff that I have forgotten (I haven't actually implemented a greywater system) If you are in Perth Ross will come out and prepare a greywater plan for your block for a very reasonable fee. What sort of detergent is best when on this system? Ross showed us a table which had all the brands cross referenced against phosphates and other salts. A lot of the brands increased salts when they reduced phosphates and that is bad for your garden. The liquid detergents however had much lower salt levels, so a good rule of thumb is to use a liquid detergent and you should be fine. |
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