I'm no expert in SQL, but can't you reduce it to 1 SQL statement?

SELECT
    sec.KEY,
    sec.ID,
    sec.HID,
    bt.NAME,
    bt.STATE,
    stats.CCS, 
    stats.kbps, 
    stats.MBytes
    FROM sec, bt, stats
    WHERE
        sec.ID = bt.id
    AND
        sec.HID = bt.HID
    AND
        sec.ID = stats.id
    AND
        sec.HID = stats.HID
    AND
        sec.INSTANCE = stats.INSTANCE
        ;
[download]