API AlgaeFixControls the main and most persistent types of algae in freshwater aquariums Benefits Controls algae growth in aquarium glass ornaments and plants. Effectively controls ldquo green water rdquo algal blooms and String or Hair algae Will not harm fish or plants strong Follow the API Easy Care Guide and use AlgaeFix: As part of Regular Care to reduce aquarium maintenance To directly treat and control algae during Water Problem Solving AlgaeFix is a