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This Spanish breeding collective is known to produce true knockout strains that will leave your head floating like a butterfly and body buzzing like a bee: We are, of course, talking about Heavyweight Seeds. Formed back in 2008, this breeder has built up a strong reputation for producing strains that are highly consistent, stable and of the very finest quality, thanks to their philosophy of only working with the purest, tastiest strains available. For strains with the best yields and the most potent knockout power, pick Heavyweight Seeds!