The caulk is listed as non-toxic, livestock safe, carcinogen free, and meets California's prop 65. I trust it, and assume that it's not NSF listed for potable water because that process is expensive.
"Marketing is the least of our challenges. It's a commercial-scale system, but it's not a commercial system in a strict sense. We use everything we produce on our campus (it's a large organization with 60+ people at each meal), we…"
I've found trout to be easier to raise than some people suggest. As long as you supply enough oxygen they're pretty tolerant. Is there a reason you're shying away from a dedicated biofilter, such as a moving bed…"
"Not sure who told you not to glue the pipes, or what kind of glue they might have been referring to...but if you used PVC primer and PVC cement, and let them dry...you really have nothing to worry about."
"Got a reply from City of Sacramento Ezpermit email
A greenhouse does not require a permit.
Sent: Wednesday, July 23, 2014 11:43 AM
Subject: Greenhouse permitting
I am wondering if you could…"
"Here is the City of Sacramentos criteria from their web site. Every City and County varies but they always seem to reference California Building Code 105.2 and then they amend that section as they seem reasonable.
In some cases, a permit is not…"
"More hurdles. The definitions section of the California Building Code
(8) Greenhouse. An accessory structure constructed mainly of translucent or transparent materials used for the cultivation of plants."
"I started a small outside aquaponics system (mainly, for the grandkids) about a year and a half ago. I've had much success with it since. While the main challenges temperature control could be overcome (I believe) by the addition of a…"