I have now bought for the 2nd time. So, I do not buy it again. More than 100 EUR thrown into the still pond and algae. The effect is too small, the product too expensive.
Several times already introduced have Phoslock of Söll in my pond and had always good results in order to reduce the phosphate content significantly. Even the algae growth associated decreases after a few days. I therefore consider - a very good prod
