Pearlweed (Hemianthus micranthemoides) aquarium plant care.
Pearlweed is rated as a medium-light plant, with a target of about PAR 30-60 at the leaves. Medium light is roughly what a mid-range planted-tank LED delivers over a standard-depth tank; going brighter without more CO2 and fertilizer usually shows up as algae rather than faster growth. CO2 is optional for it, and its care difficulty is listed as beginner.
No, CO2 is optional for Pearlweed. It grows without injection, and adding CO2 mainly speeds up growth. It is a medium-light plant, with a target of about PAR 30-60 at the leaves. Keep light, CO2 and fertilizer in balance, because raising one without the others is the most common cause of algae in planted tanks.
Cut healthy stems and replant. Trim stems just above a leaf node, push the cut tops into the substrate, and the trimmed base will usually branch and regrow. New growth comes in fastest when the tank matches its needs: medium light, with CO2 optional.
Yes. Pearlweed is listed at beginner difficulty. It needs medium light, with a target of about PAR 30-60 at the leaves, CO2 is optional. Stable light, nutrients and water changes matter more than any single product. Check these needs against your current setup before buying.
Pearlweed taxonomy and care recommendations cross-checked against the following authoritative references and our internal vendor + breeder database.
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