Seachem Water Garden Oasis Pond Acid Buffer 500ml
Pond Acid Buffer™ is designed to lower pH in decorative ponds and large aquariums without the use of phosphate or phosphoric acid. It is ideal for use with planted ponds containing koi, goldfish, or other pond fish. It is not eutrophic and will not promote algae growth. It is particularly useful in lowering the pH in concrete ponds.