Oxygenator pond plants submerge under water for water health & clarity
Allow two portions of oxygenating plants per square metre of surface area.
Oxygenators photosynthesize to produce oxygen during daylight hours which keeps the water fresh.
Submerged oxygenators are also vital in the pond as they use dissolved nitrates and mineral salts from the water. This competes with the algae growth. Some varieties will also shade the water, depriving the algae cells of sunlight.
Submerged oxygenators need to be maintained on a regular basis so that they do not fill more than 30% of the volume of the pond or container pond.
We send some submerged oxygenating pond plants as bareroot portions (loose) as the plant floats freely in the water (Ceratophyllum demersum - Hornwort). These can be dropped into the pond and will find their own depth. No weighting is required.
Some oxygenating plants have two types of foliage - one submersed below the water surface and the other on or above the water surface (Ranunculus aquatilis). The foliage will change between the two as the season progresses.