Moneywort (Bacopa monnieri) is one of the most widely kept aquarium stem plants in the hobby — a hardy, compact, broadly tolerant species with small, rounded to oval, slightly succulent leaves carried in opposite pairs along upright stems. It is the most adaptable Bacopa in the catalog: growing across a wider temperature, pH, and light range than either Lemon Bacopa or Purple Bacopa, tolerating harder and more alkaline water than many stem plants, and maintaining healthy green growth under very low light conditions that stop most other stem plants from growing meaningfully. The leaf form is similar to Lemon Bacopa but the leaves are somewhat smaller, the internodal spacing slightly more compact, and the growth habit generally sturdier and more self-reliant — Moneywort is the Bacopa you introduce and largely leave alone, fertilising consistently and trimming periodically, rather than the one you optimise for colour expression. Above the waterline it produces small, pale lavender to white flowers where stems emerge from the surface. Fully safe with all Neocaridina, Caridina, and snails.
Not RequiredCO₂
60–84°FTemperature
Low–HighLighting
What to Expect
Growth, Adaptability & Behaviour
Small, rounded leaves with a slightly succulent texture — neat and compact — each leaf is small — 1–1.5cm across — and slightly thick or fleshy compared to the thinner leaves of faster-growing stem plants, giving the plant a neat, tidy appearance that holds up well over time. The slightly succulent leaf texture means leaves retain their form and do not become ragged or translucent as they age the way thin-leafed species sometimes do.
Extremely wide parameter and light tolerance — one of the most adaptable stem plants — Moneywort grows in pH from slightly acidic to quite alkaline, in hard or soft water, under low or high light, and across a temperature range from cool subtropical to warm tropical. This breadth of tolerance makes it suitable for virtually any freshwater setup without parameter adjustment and makes it the most reliable backup option when a stem plant choice needs to work across a wide range of tank conditions.
Slower, more compact growth than fast stem plants — lower trimming frequency — Moneywort grows at a moderate pace — slower than Willow Hygro, Pennywort, or Anacharis Najas — which means less frequent trimming to maintain the desired height. In most tanks a trimming cycle every six to eight weeks is sufficient. The compact internodal spacing means stems look full and tidy at any height rather than sparse between nodes.
Produces small lavender-white flowers above the waterline — stems that grow above the waterline in emerged conditions produce small, pale lavender to white flowers — a pleasant above-water quality that tanks with open tops and stems reaching the surface will display. The flowers are small and unshowy but visible and indicate a healthy, well-nourished plant.
Biofilm on leaf surfaces — consistent shrimp grazing — the small, smooth, clearly bounded leaf surfaces accumulate biofilm that shrimp graze continuously. In a group of planted Moneywort stems the combination of biofilm on multiple leaf surfaces at various heights in the water column provides a vertically distributed foraging resource that shrimp use throughout the day.
How to Set It Up
Getting Started
1Plant in groups of five to seven stems in the midground or background — strip the lowest 3cm of leaves and plant at 2–3cm spacing. Moneywort grows more slowly than fast stem plants so a slightly denser initial planting helps the group look coherent from the outset rather than sparse for the first weeks.
2Any light level from low to high — adjust to what the tank provides — Moneywort grows under all practical aquarium light levels. Under low light growth is slow but reliable; under high light growth is faster and leaves may develop a very slight warm tint. Choose the light level that suits the rest of the tank — no adjustment is needed for Moneywort specifically.
3Trim every six to eight weeks and replant tops — cut stems at the desired height, strip the lowest 3cm of leaves from the cut tops, and replant immediately. The original stems branch from the cut points. Moneywort branches readily and becomes progressively denser at each trimming cycle.
4Fertilise consistently with balanced liquid formula — two to three doses per week of comprehensive liquid fertiliser. Moneywort is not particularly demanding but responds to consistent fertilisation with faster growth and more compact internodal spacing — unfertilised plants grow slowly and may have larger gaps between leaf pairs than well-fed plants.
💡 Bonus Tip
Moneywort is the most reliable stem plant for bridging a parameter gap when you have a mixed tank or uncertain water chemistry — if you are not sure whether a faster-growing, more demanding stem plant will thrive in your specific water parameters, establish a group of Moneywort first. If Moneywort grows steadily and stays green after six to eight weeks, the water chemistry is sufficient for most other stem plants in the catalog. If Moneywort struggles, something in the water chemistry — pH, GH, nutrient levels, or lighting — needs attention before more sensitive species will succeed.
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Browse more aquatic plantsPair Moneywort with Lemon Bacopa, Purple Bacopa, Willow Hygro, or Vallisneria for a complete planted midground. Browse our Aquatic Plants collection.
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