Paul Wheaton continues his chat with Ben Lawson, who wants to turn his wet dream of dryland ponds and chinampas into reality.
Ben wants to discuss ways to remove toxins from harvested rainwater. Paul prefers to keep them out of the water in the first place, though he admits that systems such as the collection of road runoff as shown in the world domination gardening DVDs do bring in toxins. They discuss the environmental footprint of cement, the cost and toxicity of city water, ways to harvest rainwater without structures, flowing water over rocks or flowforms to oxygenate it, and the use and choice of plants to decontaminate water.
One of the Badge Bits in the Skills to Inherit Property program is to seal a pond without using a liner or bentonite, as demonstrated in Josiah's three minute video. If there is any clay in the soil, an excavator can be used to compact and seal a pond without having to purchase bentonite. They discuss gleying and whether or not it works. Ben's big dream is a chinampa system like the one the Bullock brothers made. They put a swamp back on their land and use prunings from their landscape business to create a dock and pathways accross the swamp. Plants grown on these are always close to water. Paul thinks this is better than using a woodchpper for prunings. If you access by a canoe, be careful not to leap from it and turn into swamp monster like Paul did.
Ben would like a zero irrigation strategy - 'don't water your garden, garden your water'. Paul wants to fill the bootcamp this year to enable projects such as a spring terrace and/or a humus well. They discuss the pros and cons of fertigation versus irrigation with clean water and Sepp Holzer's concept of living water.
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