etuHad4 said:

"everything is toxic at some level"
Even water.
In rare cases, drinking an extreme amount in a short time can be dangerous. It can cause the level of salt, or sodium, in your blood to drop too low. That's a condition called hyponatremia.It's very serious, and can be fatal. You may hear it called water intoxication.Aug 14, 2014

So why worry. Your going to be eating Fungus.

---

A lot of things are bad in to high of doses

etuHad4 said:

"everything is toxic at some level"
Even water.
In rare cases, drinking an extreme amount in a short time can be dangerous. It can cause the level of salt, or sodium, in your blood to drop too low. That's a condition called hyponatremia.It's very serious, and can be fatal. You may hear it called water intoxication.Aug 14, 2014

---

stardune said:

Right.  I understand that everything is potentially toxic.  But some things are more toxic than others, for sure. 

So for the sake of this thread, let's assume that I want to use less aluminum, even if some people are cool with aluminum.

---

fortunately aluminum isnt one of those more toxic things

you would have a hard time not using aluminum in this hobby, but if thats the health fad you are into, you could probably cater to it by researching some of the traditional SE asian / tropical cultivation methods. i saw some pretty amazing stuff in thailand, but even the indigenous people use aluminum these days

i say traditional because aluminum hasnt always been a cheap metal, it used to be a luxury metal, and there are lots of methods that predate it. manufacturing trends are gonna be most of the problem