A planted aquarium is one of the most rewarding styles of fishkeeping. A well-designed planted tank doesn’t just look beautiful—it also creates a healthier environment for fish, improves water quality, reduces algae, and provides a natural ecosystem that closely resembles freshwater habitats found in nature.
Whether you’re looking to create a simple low-maintenance planted aquarium or a stunning aquascape worthy of competition, success starts with choosing the right equipment and understanding the needs of aquatic plants.
In this comprehensive guide, we’ll take you through everything you need to know about setting up a planted aquarium, from choosing the tank and substrate to planting techniques, lighting, fertilisation, and ongoing maintenance.
Why Choose a Planted Aquarium?
Live plants offer numerous benefits that artificial decorations simply can’t match.
Advantages include:
- Natural filtration
- Oxygen production
- Improved water quality
- Reduced nitrate levels
- Natural shelter for fish
- Algae suppression
- Beautiful, ever-changing aquascapes
- Healthier aquatic environment
A thriving planted aquarium is often easier to maintain than many beginners expect.
Step 1: Choose the Right Aquarium
Almost any freshwater aquarium can be converted into a planted tank.
Popular sizes include:
Nano Aquariums (20–60 Litres)
Ideal for:
- Shrimp
- Bettas
- Small aquascapes
Medium Aquariums (60–200 Litres)
Perfect for:
- Community fish
- Nature aquariums
- Mixed planting
Large Aquariums (200 Litres+)
Provide greater stability and more opportunities for complex aquascaping.
Choose the largest aquarium your space and budget allow, as larger tanks tend to be more forgiving.
Step 2: Select a Suitable Location
Place the aquarium:
- Away from direct sunlight
- On a level, sturdy cabinet
- Near electrical sockets
- Away from radiators
- Away from draughts
Avoid direct sunlight, as it often encourages nuisance algae.
Step 3: Choose the Right Substrate
Plants absorb nutrients through both their roots and leaves.
Choosing an appropriate substrate is essential.
Aquasoil
The preferred choice for heavily planted aquariums.
Benefits include:
- Nutrient-rich
- Excellent root development
- Slight pH buffering
- Ideal for aquascaping
Popular for Nature Aquarium layouts.
Gravel
Suitable for beginner aquariums.
Works well when combined with:
- Root tabs
- Liquid fertilisers
Choose fine gravel for easier planting.
Sand
Some plants grow well in sand, although root-feeding species generally require additional fertilisation.
Fine aquarium sand provides a natural appearance.
Step 4: Add Hardscape
Before adding plants, position your hardscape.
Popular materials include:
Driftwood
Provides:
- Natural appearance
- Plant attachment points
- Shelter for fish
Rocks
Popular choices include:
- Dragon Stone
- Seiryu Stone
- Lava Rock
- Slate
Arrange hardscape first, then plant around it.
Step 5: Install Filtration
Good filtration keeps the aquarium healthy.
Suitable filter types include:
- External canister filters
- Internal filters
- Hang-on-back filters
Choose a filter that provides gentle but consistent water movement.
Avoid excessive current for delicate plants.
Step 6: Choose Aquarium Lighting
Lighting is one of the most important factors for plant growth.
Modern LED lighting offers:
- Excellent plant spectrum
- Energy efficiency
- Long lifespan
- Adjustable brightness
- Timer compatibility
Most planted aquariums perform well with 6–8 hours of lighting initially.
This can gradually increase to 8–10 hours once the aquarium matures.
Step 7: Decide Whether to Use CO₂
Carbon dioxide is one of the primary nutrients plants require.
Low-Tech Planted Aquariums
Generally rely on naturally dissolved CO₂.
Suitable for:
- Anubias
- Java Fern
- Java Moss
- Cryptocoryne
High-Tech Aquariums
Use pressurised CO₂ systems.
Benefits include:
- Faster growth
- Better colouration
- Carpet plants
- Healthier stem plants
CO₂ is optional for beginners but essential for more demanding aquascapes.
Step 8: Fill the Aquarium Carefully
To avoid disturbing the substrate:
- Place a plate or plastic bag on the substrate.
- Slowly pour water onto it.
- Fill gradually.
Using a dechlorinator is essential if filling with tap water.
Step 9: Choose Your Plants
Begin with easy species.
Excellent beginner plants include:
Java Fern
- Hardy
- Low light
- Attaches to wood or rocks
Anubias
- Extremely durable
- Slow growing
- Doesn’t require planting in substrate
Cryptocoryne
- Wide variety
- Easy to grow
- Excellent foreground and midground plant
Amazon Sword
- Attractive centrepiece
- Easy to maintain
- Root feeder
Vallisneria
- Fast growing
- Excellent background plant
Java Moss
- Ideal for shrimp
- Easy attachment
- Low maintenance
Fast-growing plants are particularly useful during the early stages, as they help compete with algae for nutrients.
Step 10: Plant Correctly
Different plants require different planting methods.
Root Plants
Plant directly into the substrate.
Avoid burying the crown.
Rhizome Plants
Examples include:
- Anubias
- Java Fern
- Bucephalandra
Attach to:
- Driftwood
- Rocks
Never bury the rhizome.
Mosses
Attach using:
- Cotton thread
- Fishing line
- Aquarium-safe glue
Over time, they naturally attach themselves.
Step 11: Cycle the Aquarium
Before adding fish, establish the nitrogen cycle.
Beneficial bacteria convert:
- Ammonia
- Nitrite
into nitrate.
This process usually takes several weeks.
During cycling, regularly test:
- Ammonia
- Nitrite
- Nitrate
Fish should only be introduced once ammonia and nitrite consistently read 0 ppm.
Step 12: Add Fertilisers
Plants require nutrients for healthy growth.
Liquid Fertilisers
Provide nutrients absorbed through leaves.
Ideal for:
- Stem plants
- Mosses
- Floating plants
Root Tabs
Provide nutrients directly to root-feeding plants.
Suitable for:
- Amazon Swords
- Cryptocoryne
- Vallisneria
Follow the manufacturer’s dosing instructions.
Step 13: Introduce Fish Gradually
Once the aquarium is fully cycled, introduce fish slowly.
Suitable planted aquarium species include:
- Neon Tetras
- Cardinal Tetras
- Harlequin Rasboras
- Corydoras
- Otocinclus
- Honey Gouramis
- Cherry Barbs
- Celestial Pearl Danios
- Apistogramma
- Shrimp
Gradual stocking allows the biological filter to adapt.
Maintenance
A planted aquarium requires regular care.
Weekly tasks include:
- Water changes
- Cleaning glass
- Removing dead leaves
- Testing water
- Trimming plants
- Cleaning filter intake
Consistency keeps the aquarium healthy.
Trimming Plants
Regular pruning:
- Encourages bushier growth
- Improves circulation
- Prevents overcrowding
- Maintains the aquascape
Stem plants can often be replanted after trimming.
Water Changes
Most planted aquariums benefit from:
20–30% weekly water changes
Water changes:
- Remove waste
- Replenish minerals
- Improve plant health
Algae Prevention
Some algae is normal.
To minimise excessive growth:
- Avoid overfeeding.
- Don’t overstock.
- Maintain good circulation.
- Perform regular maintenance.
- Balance lighting and nutrients.
- Remove dead plant material.
Fast-growing plants naturally help suppress algae.
Clean-Up Crew
Many aquarium inhabitants help keep planted tanks tidy.
Popular choices include:
- Amano Shrimp
- Cherry Shrimp
- Nerite Snails
- Otocinclus
- Siamese Algae Eaters
They should complement, not replace, regular maintenance.
Common Beginner Mistakes
Too Much Light
Excessive lighting without adequate nutrients or CO₂ often causes algae.
Too Few Plants
Heavily planting from day one helps create stability.
Choosing Difficult Plants
Start with easy species before attempting demanding carpeting plants.
Skipping Water Changes
Even heavily planted aquariums require routine maintenance.
Overstocking Fish
Too many fish increase waste and nutrient levels.
Stock gradually.
Low-Tech vs High-Tech Planted Aquariums
Low-Tech
Advantages:
- Lower cost
- Easier maintenance
- No CO₂ required
- Ideal for beginners
High-Tech
Advantages:
- Faster growth
- Colourful plants
- Carpet plants
- Professional aquascaping
Requires:
- Pressurised CO₂
- Strong lighting
- Regular fertilisation
Choose the approach that matches your experience and maintenance commitment.
Popular Equipment for Planted Aquariums
Useful equipment includes:
- LED lighting
- External filters
- CO₂ systems
- Aquasoil
- Liquid fertilisers
- Root tabs
- Aquascaping tweezers
- Curved scissors
- Glass cleaners
- Timers
Quality equipment makes maintenance easier and improves long-term success.
Final Thoughts
A planted aquarium is one of the most rewarding ways to enjoy the freshwater fishkeeping hobby. Live plants create a healthier, more natural environment for fish while transforming an ordinary aquarium into a beautiful living ecosystem. By selecting the right substrate, lighting, filtration, and plant species—and maintaining a consistent routine of fertilisation, pruning, and water changes—you’ll create an aquarium that becomes more impressive as it matures.
Whether you’re building your first low-maintenance planted tank or planning a high-tech aquascape with carpeting plants and CO₂ injection, patience and careful planning are the keys to success. Start with hardy plants, allow the aquarium time to establish, and enjoy watching your underwater garden flourish.
At Charterhouse Aquatics, we stock everything you need to create a thriving planted aquarium, including aquasoils, aquatic plants, LED lighting, CO₂ systems, fertilisers, aquascaping tools, driftwood, rocks, filters, and aquarium accessories from leading brands such as Chihiros, Twinstar, Oase, Fluval, JBL, Tropica, Aquael, and more. Our expert team is always happy to help you choose the right equipment for your planted aquarium.
