Thank you both for the replies. Living in Houston, "winterization" effort is negligable.
I am considering the installation of either EZ Flo Mainline (5 gallon) or Fertigators Ferti-Pro. I like the below ground level installation aspect of the EZ Flo, but it does seem that the Ferti-Pro would have more flexibility and accuracy? Cost is roughly comparible. I am not particularly concerned with the one-time effort associated with installation. Thoughts? Anyone have experience with both? Maintenance differences? Thanks, Randall [?]