Category: Guides

This chart puts Tropica’s own light, CO2, difficulty and growth ratings for 18 common aquascaping plants in one place, each row linked to the Tropica page it comes from. 13 of the 18 are rated easy and 13 have a low CO2 demand. Sort any column, or filter to the plants that suit your tank.

How to read the ratings

Every rating is Tropica’s, on Tropica’s scale: light and CO2 demand are low, medium or high, difficulty is easy, medium or advanced, and growth is slow, medium or fast. They are categories rather than measurements, and this table keeps them that way. Where Tropica rates a named cultivar rather than the species, the plant’s own page says which.

Tropica leaves some fields blank. Those cells read “Not rated” and name the second source AquaLexicon uses instead, such as Aquasabi for Cryptocoryne wendtii.

Plant	Type	Light demand	CO2 demand	Difficulty	Growth	Source
Anubias nana Anubias barteri var. nana	Epiphyte	Low	Low	Easy	Slow	Tropica
Java fern Leptochilus pteropus	Epiphyte	Low	Low	Easy	Slow	Tropica
Bucephalandra Bucephalandra sp.	Epiphyte	Low	Low	Easy	Slow	Tropica
Java moss Taxiphyllum barbieri	Moss	Low	Low	Easy	Medium	Tropica
Christmas moss Vesicularia montagnei	Moss	Medium	Low	Medium	Medium	Tropica
Cryptocoryne wendtii Cryptocoryne wendtii	Rosette	Not rated by Tropica (Aquasabi: low)	Not rated by Tropica (Aquasabi: no)	Easy	Medium	Tropica
Amazon sword Echinodorus grisebachii	Rosette	Low	Low	Easy	Not rated	Tropica
Vallisneria Vallisneria spiralis 'Tiger', V. americana 'Natans', V. 'Gigantea'	Stolon	Low	Low	Easy	High ('Natans'); not rated ('Tiger', 'Gigantea')	Tropica
Dwarf hairgrass Eleocharis acicularis	Carpet	Low	Low	Easy	Medium	Tropica
Monte Carlo Micranthemum tweediei 'Monte Carlo'	Carpet	Medium	Medium	Medium	Medium	Tropica
Dwarf baby tears (HC Cuba) Hemianthus callitrichoides 'Cuba'	Carpet	High	High	Advanced	Medium	Tropica
Glossostigma Glossostigma elatinoides	Carpet	High	High	Advanced	Not rated	Tropica
Staurogyne repens Staurogyne repens	Stem	Low	Low	Easy	Medium	Tropica
Rotala Rotala rotundifolia	Stem	Low	Low	Easy	Medium	Tropica
Ludwigia repens Ludwigia repens	Stem	Medium	Low	Easy	Medium	Tropica
Bacopa caroliniana Bacopa caroliniana	Stem	Low	Low	Easy	Slow	Tropica
Alternanthera reineckii Alternanthera reineckii	Stem	Medium	Medium	Medium	Medium	Tropica
Amazon frogbit Limnobium laevigatum	Floating	Low	Low	Easy	Medium	Tropica

What the chart shows

CO2 is the dividing line. Only Dwarf baby tears (HC Cuba) and Glossostigma are rated high for CO2, and every one of them is a carpet plant. If you run a tank without CO2 injection, filtering to low CO2 leaves you most of the list, including one carpet: dwarf hairgrass.

The rhizome plants, Anubias, Java fern and Bucephalandra, are all rated easy and slow-growing, which is why they suit a low-light, low-maintenance layout like the Walstad method. The mosses split: Java moss is easy, Christmas moss medium. The carpet plants guide explains why the 4 carpets here spread so widely from easy to advanced.

Using this chart

You’re welcome to cite or link to this chart. Each rating links to its Tropica source, and the table is rebuilt from AquaLexicon’s reference file whenever a rating is re-checked, so the date under it tells you how current it is.

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Aquarium plant chart questions

Which aquarium plants don’t need CO2?

13 of the 18 plants in this chart have a low CO2 demand in Tropica’s ratings, including Java fern, Java moss, Vallisneria, dwarf hairgrass and Amazon sword. Filter the CO2 column to low to see them all.

What are the easiest aquarium plants?

Tropica rates 13 of the 18 plants here easy. Java fern, Bucephalandra, Java moss, Vallisneria, Amazon sword and dwarf hairgrass are among them, and all six have a low light demand too.

Where do these plant ratings come from?

From Tropica, the Danish grower, whose plant pages rate each plant for light demand, CO2 demand, difficulty and growth. Each row links to the page it was read from. Where Tropica leaves a field blank, the cell names the second source used instead.

Sources: Tropica plant pages, linked in each row; Aquasabi, Cryptocoryne wendtii ‘Green’.

Aquascaping is the craft of arranging aquatic plants, rocks and driftwood into a deliberate underwater landscape. It is gardening and design carried out inside a fish tank. The fish still matter, but they share the stage with the scenery, and the aim is a living scene that looks composed rather than a tank that happens to have plants in it.

A quick history

The hobby has two roots. The Dutch style came first. The Dutch aquarists’ society NBAT was founded in 1930 and published the first formal guidelines for a Dutch aquascape in 1956: dense rows of plants, no rocks or wood. Takashi Amano, who founded Aqua Design Amano in 1982, took a different route with the Nature Aquarium, a style built on elements found in nature. His book Nature Aquarium in the Glass followed in 1992.

The building blocks

• Plants: hardy ferns through to demanding carpet plants. These are the living material of the scape.
• Hardscape: the rocks and wood that form the structure, set before any planting.
• Substrate: the soil or aquasoil plants root into and feed from.
• Light: the engine of plant growth. Intensity decides what you can grow.
• CO₂ and ferts: optional fuel. Added CO₂ unlocks the demanding plants, but a simple tank does without.

Those five decide almost everything else, including which styles are open to you and how much maintenance the tank will need.

The main styles

Most scapes follow one of a handful of styles. The minimalist, stone-only Iwagumi and the landscape-driven Nature Aquarium are the most recognisable. The Dutch style is all plants and no hardscape. The jungle style is deliberately wild and forgiving, the Walstad method is low-tech and hands-off, and a biotope faithfully recreates one real habitat. They share the same building blocks and differ in how they use them.

What it takes to start

Less than people think. A modest tank, a few hardy plants, a decent light and some patience will get you a planted tank that looks good, with no pressurised gas involved. The high-tech end is optional and comes later, if at all. Our beginner’s guide walks through the choices that actually matter for a first tank.

Is it hard?

As hard as you make it. A low-tech jungle or Walstad tank of hardy plants is genuinely beginner-friendly. A carpeted, CO₂-driven contest layout is not. Most newcomers start at the demanding end, picking the hardest plants and styles before they have learned how plants behave day to day. The forgiving setups teach you exactly that, which is what the demanding ones assume you already know.

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Aquascaping questions

Is aquascaping only for experts?

No. The reputation comes from the elaborate competition tanks, but a simple low-tech planted tank using hardy plants is well within reach for a beginner. The difficulty scales with your ambition rather than with the hobby itself.

Do you need live plants to aquascape?

Effectively, yes. Living plants are the point. You can arrange hardscape on its own, but the craft is about growing and shaping plant life into a scene, which is what separates an aquascape from a decorated tank.

Do you need CO₂ for aquascaping?

Not always. Plenty of hardy plants grow without it, so a low-tech tank needs no CO₂ at all. It becomes worth the cost and the fuss only when you move to demanding carpets and dense, fast growth.

Sources: Fin & Stem, A history of aquascaping; ADA, Founder Takashi Amano.

The easiest way to start aquascaping is to keep it low-tech: a modest tank, hardy plants that don’t need CO₂, and a simple light. Get a feel for how plants actually grow before chasing carpets and pressurised gas. This guide covers the choices that genuinely matter for a first planted tank, plus the beginner mistakes worth dodging.

Start low-tech

Resist the urge to buy everything at once. A low-tech setup (no CO₂, modest lighting, hardy plants) teaches you the fundamentals cheaply and forgives mistakes. You can always upgrade later. You can’t un-spend the money on gear you didn’t need. The jungle style and the Walstad method are both built for exactly this kind of relaxed, low-tech start.

Pick forgiving plants

Begin with hardy, low-light species that don’t need CO₂ and shrug off beginner errors:

• Anubias: slow, tough, attaches to wood or rock, and almost impossible to kill.
• Java fern: another hardy epiphyte that needs no substrate and little light.
• Cryptocoryne wendtii: an undemanding rosette that Tropica says thrives in almost all conditions. It may lose leaves after planting before it settles.
• Floating plants: they draw nutrients from the water and shade the tank, which helps while it finds its feet.

Notice what’s not on that list: carpet plants. Tropica rates dwarf hairgrass easy, but the finest lawns, HC Cuba and Glossostigma, are advanced plants, so save those for tank two. Before you buy any plant, the plant ratings chart shows its light, CO₂ and difficulty ratings in one place.

The basics: tank, substrate, light

A wider tank beats a tall one, with more floor area to plant and easier lighting. A nutrient aquasoil gives root-feeders a real head start over plain gravel. And keep the light moderate at first: too much light over a new, lightly planted tank is the fastest route to an algae problem.

Mistakes beginners make

• Too much light, too soon. Bright light with few plants feeds algae, not your scape.
• Demanding carpets first. Starting with HC Cuba or Glossostigma, which Tropica rates advanced with a high CO₂ demand, is the quickest way to a patchy carpet.
• No patience. A new tank needs to cycle and settle. Rushing fish in or judging it after a week is the classic error.
• Overstocking. Too many fish too fast overwhelms a young tank’s balance.

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Beginner questions

What’s the cheapest way to start aquascaping?

A low-tech tank with hardy plants and no CO₂. Skip pressurised gas and high-end lighting at first. A modest light, some Anubias and Java fern, and patience will get you a good-looking planted tank for very little.

Do you need CO₂ for a beginner planted tank?

No. Many hardy plants have a low CO₂ demand. CO₂ only becomes necessary for plants rated high, such as HC Cuba and Glossostigma, not for a first low-tech tank.

How long before a new aquascape looks good?

Usually a couple of months. Plants need time to root, grow in and fill out, and the tank needs to find its balance. The patience to wait through the awkward early weeks is half the skill.

Sources: Tropica, Anubias barteri var. nana; Tropica, Microsorum pteropus (Java fern); Tropica, Cryptocoryne wendtii 'Green'; Tropica, Limnobium laevigatum; Tropica, Eleocharis acicularis; Tropica, Micranthemum callitrichoides 'Cuba'; Tropica, Glossostigma elatinoides; Aquasabi, Appearance of in-vitro plants.

This aquascaping glossary is an A–Z of the terms you will meet in the hobby, covering the styles, plants, hardscape and gear, each with a plain-English definition and a link to the full explainer. Start anywhere, or follow the links through to the pages that cover a term in depth. New entries are added as the library grows.

A–Z of aquascaping terms

• Amazon sword: large, hardy background rosette plant.
• Anubias: slow-growing rhizome plant for wood and rock that thrives even in shade.
• Aquasoil & substrate: the nutrient-rich base plants root into.
• Biotope: a tank recreating one real-world habitat faithfully.
• Black beard algae: tufty dark algae linked to low CO₂ and slow growth.
• Bucephalandra: slow epiphyte grown attached to rock and wood.
• Carpet plants: low, spreading plants that form a lawn across the floor.
• CO₂ injection: added carbon dioxide for faster, denser plant growth.
• Cryptocoryne wendtii: easy rosette plant that may lose leaves after planting.
• Dragon stone (Ohko): knobbly, largely inert aquascaping rock.
• Dutch style: dense, hardscape-free planted garden.
• Dwarf baby tears (HC Cuba): tiny, demanding carpet plant needing high light and CO₂.
• Dwarf hairgrass: easy, grassy carpet plant.
• Floating plants: surface plants that shade the tank and absorb nutrients.
• Focal point: the spot a layout draws the eye toward.
• Iwagumi: minimalist, stone-only Japanese layout.
• Java fern: hardy epiphyte fern attached to wood.
• Java moss: easy moss tied to hardscape.
• Jungle style: wild, overgrown, low-maintenance look.
• Lighting & PAR: light intensity that drives plant growth.
• Monte Carlo: round-leaved carpet plant rated medium difficulty.
• Nature Aquarium: naturalistic landscape style pioneered by Takashi Amano.
• Negative space: deliberate open areas that give a scape room to breathe.
• Plant melt: leaves dissolving after planting as a plant adapts.
• Rotala rotundifolia: undemanding stem plant that needs good light to turn red.
• Rule of thirds: a guide for placing the focal point off-centre.
• Seiryu stone: jagged grey limestone rock that raises water hardness.
• Spider wood: branchy driftwood used for canopy and tree effects.
• Aquascaping tools: the scissors, tweezers and kit for planting and trimming.
• Walstad method: low-tech, soil-based, hands-off approach.

Just starting out? Begin with what aquascaping is and the beginner’s guide.

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Using this glossary

What are the most important aquascaping terms to learn first?

Hardscape, substrate and carpet cover most early conversations. Hardscape is the rock and wood that sets the structure, substrate is what the plants root into, and a carpet is the low, spreading planting across the floor of the tank.

Do I need to know the Latin plant names?

Not to get started, but they help when you buy. Trade names vary between shops and some plants are sold under more than one name, so the Latin binomial is the reliable way to check you are getting the species you meant to buy.

Where should a complete beginner start?

Read what aquascaping is for the overview, then the beginner’s guide for the practical choices. Come back to this glossary whenever a term turns up that you have not met before.

Sources: Tropica, Anubias barteri var. nana; Tropica, Cryptocoryne wendtii 'Green'; Tropica, Eleocharis acicularis; Tropica, Micranthemum tweediei 'Monte Carlo'; Tropica, Micranthemum callitrichoides 'Cuba'; Tropica, Rotala rotundifolia; Aquasabi, Appearance of in-vitro plants.