Oase AquaActiv AlGo Universal Pond Algae Treatment

A universal algae treatment for pond keepers dealing with string algae, slime algae or other common algae growth. It helps control algal metabolism throughout the whole pond, including spots you can't reach directly, over two to three weeks, and stays well tolerated by plants and pond life when used as directed. Choose from two bottle sizes to match the volume of your pond.

Overview AlGo Universal is a liquid pond algae treatment formulated to tackle several common algae types, string algae, slime algae and brown algae, in a single product rather than needing a different treatment for each one. It works by inhibiting algal metabolism and reducing the formation of new algae, so growth is addressed at the source rather than just removed on the surface.

Because it disperses through the whole pond rather than being applied spot by spot, it reaches areas that are otherwise awkward to treat directly. The manufacturer's guidance is to apply it as soon as algae growth begins, which is when it works most effectively. When used correctly, it is well tolerated by plants and pond inhabitants.

What you get: a bottle of AlGo Universal, supplied in your choice of 500ml or 5 litre size, ready to dose into your pond.

Key benefits It slows down algal metabolism rather than just knocking back visible growth. It is effective against several of the most frequently occurring pond algae types rather than being limited to one. And it works across the full body of water, so hard-to-reach corners of the pond are treated along with the rest.

Choosing your size The 5 litre bottle has a manufacturer-stated capacity, treating ponds up to 100 m³, which makes it the reference point for larger ponds. The 500ml bottle is intended for smaller ponds; the manufacturer has not published a specific maximum pond volume for this size, so if you are near the upper end of what a smaller bottle might cover, sizing up to the 5 litre option removes any guesswork.