THE actions of four people at the top of a large Sunshine Coast drug syndicate had "significant potential for misery and harm".
Justice John Byrne also told the Ganley family members - who were targeting young people at music festivals and social events - that trafficking ecstasy, speed, cocaine and marijuana could cause many health problems in the community.
Financially-driven leader, Anthony Ganley, 34, was jailed for 7.5 years for his role at the top of the trafficking network, filtering drugs to wholesalers who would pass on to street level dealers.
He will become eligible to apply for parole in February, 2015.
Ganley targeted events such as the Big Day Out music festival and Australia Day in 2009 and 2010.
His wife, Gabrielle Costello, 24, had a two-year jail sentence suspended for two years for her administrative role in the "commercial enterprise", sometimes answering her partner's phone and acing as "a go-between" to supply drugs.
They have both been living and working in Rockhampton since mid-2011 where they have had custody of Anthony's eight-year-old son.
Ganley's father, Wayne, 57, and brother, Dwayne, 30, were jailed for four years and will become eligible to apply for parole in February, 2014.
Wayne was involved in "warehousing the drugs" and providing "advice and encouragement" including ways to avoid police detection.
Dwayne was involved in supplying pills.
Justice Byrne acknowledged the Ganleys did not profit greatly from the enterprise but noted they were persistent even when police were onto them.
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