Re: [IGSROBIN] Heat box: Perlite Hello from Snowy Illinois! Perlite may cause some plants to be sick from what I understand because perlite has varying amounts of flourides, similiar to that used in municipal drinking water. May cause tip burn in sensitive plants. In pels??
- To: I*@MAELSTROM.STJOHNS.EDU
- Subject: Re: [IGSROBIN] Heat box: Perlite Hello from Snowy Illinois! Perlite may cause some plants to be sick from what I understand because perlite has varying amounts of flourides, similiar to that used in municipal drinking water. May cause tip burn in sensitive plants. In pels??
- From: T* C* <c*@SVCC.EDU>
- Date: Wed, 24 Feb 1999 15:28:44 -0600
- References: <199902151456.JAA02945@europa.dreamscape.com>
At 08:01 PM 2/15/1999 -0500, you wrote:
>I've had very good results by putting the cable in back and forth rows
>stapled very loosely on a piece of 3/4" thick wood. I put 1 1/2" high
>pieces of wood around the sides. When everything was set, I placed fine
>gravel on top of the heating cables. Just enough to cover. Then I placed a
>piece of 1/4" hardware cloth (rough screeninging) on top of the gravel.
>Place your little plastic growing pots on top and water.
>
>Bill from Syracuse, New York USA
>
>
