After reading some positive reviews, I ordered this oasis-product for two applications. Already after the first application, the question remained what überaupt happened !!! The following days of sunshine could sprout filamentous algae, gedeien and again to the annoyance, as if he had never introduced the means. So I made promptly after the second manual application, with the same result: the algae grow undisturbed. Conclusion: the thing has only made rich oasis for me, the effusive reviews give the impression of being written by Oasis employees themselves. So it has come only to a star and because fish and plants is nothing even happened in the applications
