Can I assume the hydrated lime is to get rid of any toxic residues from manufacturing the PVC pipe?eric in singapore
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Yes. It took me five years of research to discover PVC was safe to use in hydroponics if it was first "bleached out" with limewash.
You can buy lye in sacks from Univar. Warehouses in most cities but not apparent. Australia too I'd guess.Univar Australia Pty. Ltd.PO Box 1005Ingleburn NSW 2565029-618-1588
What size is the PVC and how big are the holes?
90mm PVC pipe, 75mm drill can to punch out the holes.I've worked with a few other materials (wood, metal) building hydroponics setups and PVC is a dream to work with as long as it is safe to grow food in. You can do in PVC in a few minutes what takes you hours and hours of work to build in other materials. It is also mega cheap, easily scavenged and ubiquitous. Making replacements or building new layouts is not a big deal.
Have you tried rain gutters? around here 10 foot sections of metal rain gutters come on sale for $2.
Hello mr arcane, how you discovered that lime can make pvc safe for growing food?
Hello Mr. Arcane. How you figured out that lime can make pvc safe for hydroponics?
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