Hi Fernando, I've forwarded your message to the AGA members' list, as that list gets more traffic than the announcement list. The idea behind the announcement list was to limit it to business announcements so that they didn't get mixed in with chatter... Even though it has been sparsely used so far!<g> As far as your question is concerned, you are right that plants will easily find their way down through to your ammendment level. OTOH, it's really hard to keep a "mound" of substrate from sifting down flat relatively quickly. It works better to construct your mound out of more stable materials like rock or driftwood and plant in, on or around it to achieve the shape tyou want. Karen ------------------ 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/