G-Towers: Difference between revisions
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*Food Safety Facts - The G-Tower is just as food safe as any other plastic flower pot on the market. The next time you go to a greenhouse or commercial lawn & garden center that sells live plants for your garden, take the time to look for a food safe label on the pot that they're growing in or on any other plastic flower pot they have for sale. The fact that the G-Tower is made out of ASTM-D2729 drain line means that it is far more resistant to acids, which makes it even far more food safe than other types of PVC. The only time PVC could possibly be considered to be not food safe is while it is hot enough to be pliable. But, once it returns to its rigid state it no longer off-gases like hot pliable or liquid Poly Vinyl Chloride like you would find at the manufacturer. Taking a shower or bath in a house that uses PVC plumbing would be far more dangerous than eating any plant grown in a G-Tower because the 135~150 degree (F) water passing through the pipes would release more toxins from the pipes than the 72~78 degree (F) water in an aquaponics system. Combine that with the fact that hot water opens the pores in your skin and you are far more likely to absorb toxins that way rather than from eating a plant grown in a plastic flower pot, it's safe to say that the highly acid resistant ASTM-D2729 PVC drain line that the G-Tower is made from, should be the least of anybody's worries. | |||
=Sourcing= | =Sourcing= | ||
Revision as of 15:16, 14 December 2015
Intro
- See playlist from Larry Athey - [1]
- Food Safety Facts - The G-Tower is just as food safe as any other plastic flower pot on the market. The next time you go to a greenhouse or commercial lawn & garden center that sells live plants for your garden, take the time to look for a food safe label on the pot that they're growing in or on any other plastic flower pot they have for sale. The fact that the G-Tower is made out of ASTM-D2729 drain line means that it is far more resistant to acids, which makes it even far more food safe than other types of PVC. The only time PVC could possibly be considered to be not food safe is while it is hot enough to be pliable. But, once it returns to its rigid state it no longer off-gases like hot pliable or liquid Poly Vinyl Chloride like you would find at the manufacturer. Taking a shower or bath in a house that uses PVC plumbing would be far more dangerous than eating any plant grown in a G-Tower because the 135~150 degree (F) water passing through the pipes would release more toxins from the pipes than the 72~78 degree (F) water in an aquaponics system. Combine that with the fact that hot water opens the pores in your skin and you are far more likely to absorb toxins that way rather than from eating a plant grown in a plastic flower pot, it's safe to say that the highly acid resistant ASTM-D2729 PVC drain line that the G-Tower is made from, should be the least of anybody's worries.
Sourcing
- Reticulated Urethane foam, artificial soil medium, open pore filter type material, 20-25 Pores Per Inch (PPI), very course.
- Keith Pavlansky, kpavlansky@hibco.com
- Larry Athey suggests 2"x3-1/2"x3' pieces, cost of $1/board-foot, or $1.75 per piece, minimum order quantity (MOQ) of $300.
Videos
Example small-scale G-Tower based home aquaponics system that only requires a 4x4 foot corner in any room.
Hibco Plastics materials - artificial soil medium foam explained - interview of Hibco's Keith Pavlansky by David Cunningham of Smart Grow Technologies.
How to plant the G-Towers with no need for netpots or commercially manufactured plant starter plugs.