Hi Littlewolf,
If you can obtain river rock that passes the acid test, that would be my choice, too. While it's just as heavy as crushed gravel, it's much kinder on the hands.....and it looks better, too.
Gary
Hi Littlewolf,
If you can obtain river rock that passes the acid test, that would be my choice, too. While it's just as heavy as crushed gravel, it's much kinder on the hands.....and it looks better, too.
Gary
"All truth passes through three stages. First, it is ridiculed. Second, it is violently opposed. Third, it is accepted as being self-evident." - Arthur Schopenhauer
www.microponics.net.au - for candid dialogue on integrated backyard food production.
www.urbanaquaponics.com.au - the home of the Online Urban Aquaponics Manual.
Fully condensing boilers can send the condensate out of the heat exchanger with a pH as low as 2.0. Before draining to the city sewer the condensate must be "neutralized" and the pH brought up in the neighborhood of 7.0. Guess what we use in the condensate neutralizer....either limestone rock or marble chips. I am sure that the term "marble chips" is a catchall for several types of rock, but the one similarity that they all have is they will slowly dissolve in low pH water and raise the pH. Okay, long unsolicited background to your question.....would marble chips make a good growing media....probably not, due to the pH issue. I am not exactly sure how to interpret the vinegar test, but that would be the key. River rock sounds like a better way to go.
Good Luck.....mh
Hi,
Thread moved from Forum Guidelines to General AP Discussion.
Cheers
Joe
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