General Organics is not organic either, they lie like alot of the companies do. Their nutes are full of heavy metals and chems
http://www.oregon.gov/ODA/pest/Pages/stopsales.aspx
http://oda.state.or.us/dbs/heavy_metal/hitlist.lasso
http://oda.state.or.us/dbs/heavy_met...oduct_id=16787
bio thrive bloom has Indole3 Butyric Acid, Naphthaleneacetic Acid, Phosphorous Acid, Arsenic, Cadmium, Mercury, Lead, Nickel. All very bad chems and some poisons....
You are misinterpreting those web pages. I have tried to tell you this in the past, because I remember you have posted similar things in the past.
First of all,
all fertilizers contain
some trace amount of heavy metals like those you mention (greensand, rock phosphate, kelp meal, etc. too). That is in parts per million, and values of < (less than) 10, <5, <0.2, 5, <5 aren't really significant... compare them to others. Random example Maxicrop Soluble Seaweed power -
http://oda.state.or.us/dbs/heavy_metal/detail.lasso?-op=eq&product_id=16782 with 36
ppm Arsenic, this Espoma rock phosphate -
http://oda.state.or.us/dbs/heavy_metal/detail.lasso?-op=eq&product_id=21812 with 42
ppm Cadmium and 70
ppm Nickel!
Also you are reading the Non Plant Food Ingredients table incorrectly. The fields that you reference, Indole3 Butyric Acid, Phosphorous Acid, Naphthaleneacetic Acid, etc. are EMPTY... there is no value there because those substances
are not in the product (you will notice that table displayed on many of the liquid products). What is in the product for NPF-ingredients, according to the table is 0.2% Humic acid, 2% Kelp and for Other Ingredients 1.5% Cane Sugar and 0.5% Glacial Rock Powder.
As for guano (which can come from bats or seabirds) AFAIK the primary risk comes from inhalation of guano dust, as it could potentially contain microbes like Histoplasma capsulatum (a fungi) which can infect the lungs. You should really wear a dust mask when working with guano, and basically anything that can result in fine airborne particles which includes alfalfa meal, oyster shell flour and lime, other dry granulated plant foods (esp. those which could have microbes) and even soil/potting mix. That said I never do and never have had any problems (I am relatively healthy, though) but I should still try to wear a dust mask when mixing soil.
Last thing I want to say is that hydroponics fertilizers most likely contain some synthetic chelating agent to increase trace\micro-nutrient availability. EDTA is the most common, DTPA is another. These substances have a particular affinity for heavy metals and shuttle them into plant roots as well. AFAIK the exact fate of substances like EDTA in the plant is unknown.