What can be done to either protect against or fight increased algae infestation
There are many causes for algae infestation. For example an excessive nutrient offering caused by overfeeding or by leaves sinking to the bottom of the pond.
Additional causes include unfavourable weather, unfavourable pond location (too much sunlight) or too many fish.
Simply contact you local OASE Fachhändler . He will test your water and will recommend a suitable filtration system or will offer advice in using an OASE ant-algae product from the OASE aqua activ product line.