Have this Algenverhüter this summer used due to the many positive reviews, unfortunately the result is not quite as good as failed in other for us. Have as directed by the amount put together and, weather permitting, of course, unfortunately I had nevertheless taken more algae but by and large, were holding something in the frame
Only when I by chance someone had to visit the works in the shop and had recommended a means and said exactly how much should I take the best algae were completely gone
