I am installing a couple of micro sprays in a brick mailbox with small beds built in. I have to run the micro's off the lawn zone, they don't want to run a new zone for about three square feet of irrigation. I'm going to add a head to the existing lawn zone & use an rb 1800 drip conversion. The head is going to be installed in the lawn because the mailbox is solid concrete underneath. My question is, how can I protect the drip tubes from weedeater damage since they are coming out of the lawn & up the back of the mailbox? If anyone has any other ideas on how I could set this up, I'd be glad to hear that also. Thanks.