I'm looking for a product to cycle my tank. everything said Bio Spira for freshwater was the best product out there. while bio spira for saltwater is found every where I can't find the freshwater version any where. every time I type in bio spira freshwater tetra safestart comes up. and I think I read something about tetra buying the product off them and changing the name. are bio spira freshwater and tetra safestart the same thing?