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Most of the premium mixes don't, it's mostly used in cheap (or free) low quality bags. Check on the specific mix to make sure, but as far as I know Vermi, Fox Farm, Just Right, Empire etc. are all good.

Clay pipe (painted).

3 more.

Yes, just charcoal will get hot enough to low fire the clay. Bury them in the charcoal, and set it on fire.

They aren't bad on heat, but I'd bet if you dropped one it would be time for a new pipe.

You bet.

Dug the clay from the river (mixed with other clay for the top two), sculpted by hand, used a straw to make the hole, burnished with the back of a spoon, and fired in my BBQ.

Fair point, but the current situation is that a lot of unpleasant things do get dumped into the sewers along with the human waste, and passing it off onto consumers without telling them is in my opinion, not fair. Especially since the long term studies seem to indicate that they can cause a...

As far as I know, none of the conventional liquid or soild nutes use anything of the sort. But it can show up in some potting mixes such as those listed, or in "compost giveaways" at sewage plants.

It is a combination, a lot is stuff gets flushed, detergents get rinsed off, etc, but some is in the people that use the sewage system as intended as well, women taking birth control pills add hormones, chemo patients evacuate chemo chemicals, epilepsy patients pass on anti seizure chemicals.

(pic 1) The compost is far enough along to use here. I filtered it, mixed 1-2 parts compost, 1 part coir, and 1 part perlite for the base mix. (pic 2) Pinched once. (pic 3) Kitty helping trim the lower leaves. (no I don't "let" him, just can't stop him). (pic 4) Catnip bud in bloom (yes, my...

Copied from the US Geological Survey website Biosolids, the treated sludge generated by the treatment of sewage at wastewater treatment plants, is something that most people don't think about as they flush everyday chemicals and drugs down the drain. However, U.S. Geological Survey (USGS)...

I'd contend that starting with a natural manure traditionally composted is still safer than starting with sewer sludge contaminated with toxic chemicals in the first place. If for no other reason than the risk of exposure to under or mis-treated toxins in the material is diminished. In any...

Guano (or other manures) aren't the same thing at all. Biosolids are made from whatever gets dumped into the sewer system. The following is from NatualNews, not something I wrote. "(NaturalNews) The Food Rights Network (FRN), a nonprofit research group, recently issued a press release...

The following are mixes reported to contain sewage based biosolids. If you know of others, or if any on this list have changed their tune, please let me know and I will remove them. Agresoil Bay State Fertilizer Chesapeake Sunshine CompostT ComPro...

I'm sure most of you already know, but for those that don't, "Biosolids" that are sometimes sold in compost mixes is a euphemism for "treated sewage sludge". Not good for using to grow your cannabis with at all.

Thanks, I know it's a bit geeky for most, but I thought it was interesting. There is also a place to plug in a schedule and it graphs out the NPK ppms.

Copied from Grubbycup's website: How to calculate PPM: PPM is an abbreviation for "Parts per Million", a often misunderstood and misused term of some ill repute. To clarify, I mean one part of a substance to a million parts of solution, a 1 to 1,000,000 ratio. Nutrient solutions are...

Yeah, still have all 10, and luckily matured to the point where just because one can make XXXX or XXXX or XXXX at home, doesn't mean one should or has to. Actually, I do pretty well, for one thing I use potassium nitrate for plant food and not for it's other properties these days, and for...

BBQ fired raku pottery coins for keeping your weed fresh hXXp://www.youtube.com/watch?v=stTnCqQN75o&feature=youtube_gdata