Best House Plants For Aquarium – Transform Your Tank Into A Lush Tank

Are you dreaming of an aquarium that’s more than just a glass box? Imagine a vibrant, thriving miniature world where lush greenery extends beyond the water’s surface, creating a stunning display that benefits both your fish and your home. If this sounds like your ideal setup, you’re in the right place!

As aquarists, we constantly seek ways to enhance our tanks and provide the best environment for our aquatic companions. Integrating carefully chosen terrestrial house plants with your aquarium is a fantastic way to achieve this. It’s not just about aesthetics; it’s about creating a more natural, balanced, and visually spectacular ecosystem. Don’t worry—this setup is perfect for beginners, too! This guide will walk you through everything you need to know about selecting the best house plants for aquarium integration, setting them up, and caring for them.

Let’s dive in and discover how you can elevate your fishkeeping hobby to a whole new level!

Beyond the Glass: Why Integrate House Plants with Your Aquarium?

You might be thinking, “Why bother with house plants when I have aquatic plants?” It’s a great question! While aquatic plants are wonderful, terrestrial plants offer a unique set of benefits that truly enhance your aquarium setup.

Firstly, they create an incredibly appealing aesthetic. The contrast of submerged life with vibrant green foliage emerging from the tank adds a new dimension, making your aquarium a captivating centerpiece.

Secondly, and perhaps more importantly, these plants are natural powerhouses for water filtration. Their roots, suspended in the water, efficiently absorb nitrates and other waste products. This significantly improves water quality, leading to a healthier environment for your fish and shrimp.

Finally, they offer enrichment for your aquatic inhabitants. Roots dangling into the water provide hiding spots for fry, a surface for biofilm growth that shrimp love to graze on, and a sense of security for shy fish. It’s a win-win for everyone!

Crucial Considerations: What Makes a House Plant “Aquarium-Safe”?

Before you start hanging every house plant you own over your tank, there are some vital considerations. Not all plants are suitable, and choosing wisely is key to success and safety.

Understanding Plant Toxicity

This is paramount. Many common house plants are toxic if ingested, and while fish won’t typically eat the roots, sap from a broken stem or leaf could leach into the water. Always err on the side of caution. Stick to known non-toxic varieties.

Root System Requirements

The ideal plants for this setup are those that thrive with their roots consistently wet. They should be able to absorb nutrients directly from the water column. Plants with delicate, fine roots tend to do better than those with thick, woody root structures.

Lighting and Humidity Needs

Remember, these are house plants! They’ll still need appropriate lighting for their foliage, which will be above the water. A nearby window or a dedicated grow light positioned over the tank can work wonders. High humidity from the tank’s evaporation is a bonus for many tropical varieties.

Growth Habits and Size

Consider how large the plant will grow. You don’t want a massive plant overshadowing your entire tank or becoming root-bound too quickly. Opt for plants with manageable growth, or be prepared to prune regularly.

Top Picks: The Best House Plants for Aquarium Integration

Now for the exciting part! Based on safety, ease of care, and their ability to thrive with wet roots, here are some of the absolute best house plants for aquarium setups.

Pothos (Epipremnum aureum)

Pothos is arguably the king of aquarium-integrated house plants, and for good reason! It’s incredibly forgiving, grows quickly, and is excellent at sucking up nitrates. Its trailing vines look fantastic cascading down the sides of your tank.

• Ease of Care: Extremely easy, perfect for beginners.
• Root System: Develops robust root systems quickly, ideal for nutrient absorption.
• Lighting: Tolerates a wide range of light conditions, from low to bright indirect light.
• Placement: Simply suspend cuttings with a few nodes in the water; roots will form rapidly.

Philodendron (Various species like Heartleaf Philodendron)

Similar to Pothos in its growth habit and care, various Philodendron species are also fantastic choices. They offer slightly different leaf shapes and colors, adding variety to your display. They are also excellent nitrate removers.

• Ease of Care: Very easy, similar to Pothos.
• Root System: Strong, fibrous roots that readily adapt to aquatic environments.
• Lighting: Prefers bright, indirect light but can tolerate lower light.
• Placement: Like Pothos, cuttings with nodes in the water will root and thrive.

Lucky Bamboo (Dracaena sanderiana)

While often sold as an aquatic plant, Lucky Bamboo is actually a semi-aquatic terrestrial plant. It thrives with its roots submerged and its foliage above the water line. Its architectural form adds a unique touch.

• Ease of Care: Easy, very resilient.
• Root System: Submerged roots develop well, though they can be slower than Pothos.
• Lighting: Prefers moderate to bright indirect light. Direct sun can scorch leaves.
• Placement: Ensure only the stalk and roots are in the water, not the foliage.

Spider Plant (Chlorophytum comosum)

Spider plants are known for their air-purifying qualities and their adorable “spiderettes.” These baby plants can be easily rooted in your aquarium water, providing a beautiful, arching display.

• Ease of Care: Very easy to grow and propagate.
• Root System: Fine, fleshy roots that appreciate consistent moisture.
• Lighting: Bright, indirect light is best for vibrant foliage.
• Placement: Use the “spiderettes” (baby plants) directly, placing only the root base in the water.

Peace Lily (Spathiphyllum spp.)

Peace Lilies are stunning plants with elegant white blooms. They can adapt to having their roots in water, though they generally prefer a more humid environment, which an open-top aquarium can provide.

• Ease of Care: Moderate; ensure good air circulation to prevent fungal issues on leaves.
• Root System: Can adapt to water culture, but monitor for rot if over-submerged.
• Lighting: Low to moderate indirect light.
• Placement: Best to have the plant in a pot with only the roots submerged, not the crown.

Syngonium (Arrowhead Plant – Syngonium podophyllum)

Syngoniums offer attractive arrow-shaped leaves and come in various colors. They are vigorous growers and will readily root in water, making them an excellent choice for a lush display.

• Ease of Care: Easy, resilient, and fast-growing.
• Root System: Develops strong, fibrous roots in water.
• Lighting: Prefers bright, indirect light but can tolerate lower light.
• Placement: Cuttings with nodes will root quickly when placed in the water.

Setting Up Your Semi-Aquatic Paradise: Practical Integration Steps

Integrating these plants is surprisingly simple. You don’t need fancy equipment; just a few basic items and a little creativity.

Using Cuttings for Propagation

For Pothos, Philodendron, and Syngonium, the easiest method is to take cuttings. Snip a piece of stem with at least 2-3 nodes (the bumps where leaves emerge). Remove any leaves that would be submerged in the water to prevent rotting.

Secure Placement is Key

You’ll need a way to suspend the plants so that their roots are in the water but their foliage is above the water line.

• DIY Solutions: Small plastic baskets (like those used for aquatic plants), suction cup clips, or even simply propping stems between the tank lid and the glass can work.
• Purpose-Built Holders: Many hobbyists use 3D-printed holders or small glass/acrylic plant hangers that hook onto the rim of the tank. These often have holes or slots to hold the plant’s stem securely.
• Sponge Filters: For plants like Peace Lily or Spider Plants, you can place the plant directly into the top of a hang-on-back (HOB) filter or even an internal sponge filter, ensuring only the roots are in the water.

Avoiding Foliage Submersion

It’s crucial that the leaves of these terrestrial plants stay out of the water. Submerged leaves will rot, fouling your tank water and potentially harming your fish. Only the roots or the very base of the stem should be in contact with the aquarium water.

Nurturing Your Green Companions: Care and Maintenance

While these plants are generally low-maintenance, a little attention will ensure they thrive and continue to benefit your aquarium.

Regular Pruning

These plants can grow quite vigorously! Prune them regularly to maintain their shape, prevent them from becoming too leggy, and encourage bushier growth. Pruning also helps manage the amount of nutrient uptake, as more plant material means more nutrient absorption.

Leaf Health and Cleaning

Wipe down the leaves occasionally to remove dust, which can impede photosynthesis. Keep an eye out for yellowing leaves, which might indicate a nutrient deficiency (unlikely if in aquarium water) or too much/too little light.

Monitoring Water Parameters

While these plants are fantastic at consuming nitrates, they aren’t a magic bullet. Continue with your regular water changes and monitor your water parameters. Their presence will likely reduce the frequency or volume of water changes needed, but never eliminate them entirely.

Pest Control (Above Water)

Since the foliage is out of the water, it’s susceptible to common house plant pests like spider mites or mealybugs. Inspect your plants regularly. If you find pests, treat them with appropriate house plant insecticides, ensuring no residue falls into the aquarium water. Neem oil is a popular organic option, but apply carefully.

Troubleshooting & Tips: Avoiding Common Pitfalls

Even with the best intentions, you might encounter a few hiccups. Here’s how to navigate them.

Yellowing Leaves

This often indicates a nutrient imbalance or incorrect lighting. If the plant is new to the setup, it might just be adjusting. Ensure it’s getting enough indirect light. If multiple leaves are yellowing rapidly, check for root rot if the plant’s crown is too submerged.

Slow Growth

If your plant isn’t growing as fast as you’d like, consider its light source. Is it getting enough bright, indirect light? Sometimes, fish waste alone isn’t enough for very fast-growing plants, and a very dilute liquid house plant fertilizer (applied only to the aerial leaves, never to the water) can help.

Algae Growth on Roots

It’s common to see some green algae develop on the submerged roots. This is generally harmless and can even be a food source for shrimp. If it becomes unsightly or excessive, gently wipe it off during maintenance.

Root Rot

This occurs if the plant isn’t suited to constant submersion or if parts of the stem that aren’t designed for water are constantly wet. Ensure only the roots are in the water, and if using a potted plant, that the potting medium isn’t waterlogged.

Frequently Asked Questions (FAQs)

Can I use any house plant in my aquarium?

Absolutely not! As discussed, plant toxicity is a major concern. Stick to the list of recommended non-toxic plants to ensure the safety of your aquatic inhabitants.

Do I still need to fertilize my aquarium water if I have house plants?

For your aquatic plants, yes, you likely still need to fertilize, especially with micronutrients. The house plants primarily absorb nitrates and phosphates, which are macronutrients. Your aquatic plants still need a full spectrum of nutrients. For the house plants themselves, the aquarium water provides ample nutrients, so no additional root fertilization is needed.

Will house plants cause problems with my fish?

When chosen carefully and set up correctly, house plants should not cause problems. In fact, they usually improve water quality and provide enrichment. The main risk comes from using toxic plants or allowing leaves to rot in the water.

How do I know if a plant is toxic?

If you’re unsure about a plant not on our recommended list, a quick online search for “[Plant Name] toxicity to pets” or “[Plant Name] aquarium safe” is a good starting point. When in doubt, don’t use it.

Can I use these plants with a fully enclosed aquarium lid?

It’s much harder to integrate these plants with a fully enclosed lid, as their foliage needs to be above the water. Open-top tanks or tanks with partial lids are best suited for this type of setup.

How often should I clean the roots?

Generally, you don’t need to “clean” the roots unless there’s excessive algae or detritus buildup. The roots are doing their job, and beneficial bacteria will colonize them.

Cultivating Your Vision: Final Thoughts on a Thriving Home Aquarium

Integrating the best house plants for aquarium life is a truly rewarding endeavor. It’s a creative way to merge terrestrial and aquatic horticulture, resulting in a unique, visually stunning, and remarkably healthy ecosystem. Not only will you enjoy the lush greenery, but your fish and shrimp will also benefit from improved water quality and a more natural habitat.

Start with one or two of the recommended plants, observe how they thrive, and gradually expand your green canopy. You’ll be amazed at how a few simple plants can transform your entire aquarium setup into a vibrant, living piece of art. Happy planting, aquarists!