That depends....on many parameters... But.... I think I'll replace them every month, thus watching carefully for water parameters as they can come highly toxic in matters of NPK compounds. Amit ----- Original Message ----- From: "Paula Hofmann" <paula.hofmann@gte.net> To: <aga-member@thekrib.com> Sent: Sunday, December 21, 2003 2:02 AM Subject: Re: [AGA Member] Dosing plants with NPK home compunds > How often does one use the Jobes Spikes? My sword likes them too, but I > don't know how long they last. Thanks, Paula > > > ------------------ > To unsubscribe from this list, please send mail to majordomo@thekrib.com > with "Unsubscribe aga-member" in the body of the message. Archives of > this list can be found at http://lists.thekrib.com/aga-member/ > ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe aga-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/aga-member/