Hydrogelle

Hydrogelle is a small aquatic plant genus commonly cultivated in freshwater aquariums and hydroponic systems. It is a perennial that may float or grow emergent from the water, with slender stems and leaves arranged alternately. Leaves are smooth and may be bright green or reddish under certain light; flowers are small, blue or white, and bloom in summer above the surface.

In habitat terms, Hydrogelle is described in horticultural literature as tolerating a range of freshwater conditions, from still ponds to slow-flowing streams. It prefers moderate to bright light and nutrient-rich water. In cultivation, it is relatively hardy but can be sensitive to algal overgrowth under excessive nutrients.

Cultivation and propagation: Propagation is mainly through cuttings or stolons. In hydroponics, grow Hydrogelle in net pots with an inert medium and a balanced nutrient solution. Maintain pH around 6.0–7.5 and temperatures of 18–26 C. Regular trimming keeps a compact form and prevents shading of underlying vegetation.

Ecology and uses: In aquascaping, Hydrogelle provides visual contrast and shelter for small aquatic life and contributes to nutrient uptake. It is also used in phytoremediation in some hobbyist setups.

Taxonomy and etymology: The name derives from hydro- meaning water, reflecting its aquatic habit. Taxonomic placement varies by source, and hobbyist catalogs may list it with related floating-leaved taxa.