The success story of sera began more than four decades ago: Josef Ravnak - who already had gained excellent reputation with the selling live food for aquariums -, founded his own company in 1970. He first worked as a one man enterprise and developed the company into a leading supplier within the aquarium, pond and terrarium industry step by step.
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Wasn't sure what to expect however after hooking it up I can say I'm really happy with it's performance. It's my 1st diffuser so can't compare to some of the other more widely used glass/ceramic versions, but this more than meets my needs.