I agree about taking the plates out - they do not allow enough gas exchange and 
therefore impede the denitrification.  On a Plemum, we use a nonmetal window screen 
material that, while it does not allow the critters to dig through, it does all full 
gas exchange.

Susan at Coral Reef Express
Coralreefexpress.com
________________________________________

LEAVING THE LIST
================
To stop receiving messages you will need to send a message to  
[EMAIL PROTECTED]  with a command to remove you from the list.  The list 
manager  controls who belongs to the list.  

For example:
 --------------------------------------------------------------
       From: John Doe <[EMAIL PROTECTED]>
         To: [EMAIL PROTECTED]
    Subject: <not needed>

    UNSUBSCRIBE
 --------------------------------------------------------------

Reply via email to