Can I Put Philodendron In Fish Tank – ? A Complete Guide To Growing
If you have ever looked at your aquarium and thought it needed a bit more “jungle” vibe, you are not alone. Many hobbyists are turning to terrestrial plants to help manage nutrients and add a stunning visual layer to their setups.
You are likely wondering, “can i put philodendron in fish tank?” and whether it is safe for your aquatic residents. I promise that by the end of this guide, you will know exactly how to integrate these plants safely while boosting your tank’s health.
We will cover the best species to use, the step-by-step process for acclimating them, and how to avoid common pitfalls like root rot or sap leakage. Let’s dive into the world of riparium-style fish keeping!
Can I Put Philodendron in Fish Tank? Exploring the Benefits
The short answer is yes, you absolutely can, but there is a specific way to do it. You cannot simply toss the entire plant into the water; instead, you grow it with its roots submerged and its leaves emersed (above the water).
This style of growing is often referred to as a riparium setup. It mimics the natural banks of tropical rivers where vines hang over the water, trailing their roots deep into the nutrient-rich sediment.
One of the biggest reasons to ask “can i put philodendron in fish tank” is for the incredible biological filtration they provide. These plants are nitrogen-hungry monsters that can significantly lower your nitrate levels.
In a closed ecosystem like an aquarium, nitrates are the end product of the nitrogen cycle. While less toxic than ammonia, high nitrate levels lead to algae blooms and can stress sensitive fish and shrimp.
Philodendrons act as a natural sponge, sucking up these nitrates far more efficiently than many fully submerged aquatic plants. Because they have access to atmospheric CO2, they grow faster and process waste more rapidly.
Beyond filtration, the root systems create a complex underwater forest. This provides excellent hiding spots for fry, shy species like Sparkling Gouramis, and various types of freshwater shrimp.
Choosing the Best Philodendron Species for Your Aquarium
Not all Philodendrons are created equal when it comes to living with their feet in the water. While there are hundreds of species, a few stand out as the most resilient and beginner-friendly options.
The Heartleaf Philodendron (Philodendron hederaceum) is the gold standard for aquarists. It is incredibly hardy, tolerates lower light, and produces beautiful trailing vines that look stunning draped over the glass.
Another fantastic choice is the Philodendron ‘Brasil’. This variety features striking lime-green variegation down the center of the leaves, adding a pop of color to your room while the roots clean your water.
If you are looking for something a bit more unique, the Philodendron Micans offers velvet-textured leaves with bronze undertones. It adds a sophisticated, moody aesthetic to a high-end aquascape.
Many people confuse Pothos (Epipremnum aureum) with Philodendron. While they look similar and are both excellent for fish tanks, Philodendrons usually have thinner, more heart-shaped leaves and distinct cataphylls (small leaf sheaths).
Whichever species you choose, ensure you are starting with a healthy cutting or a well-established plant that hasn’t been treated with systemic pesticides, which could be lethal to your shrimp.
Step-by-Step: How to Safely Transition Philodendrons to Water
The most critical part of the process is the transition. If you take a plant directly from a pot of soil and shove it into your tank, you are asking for ammonia spikes and messy root rot.
First, gently remove the plant from its pot and shake off as much soil as possible. Use room-temperature dechlorinated water to rinse the roots until they are completely clean of dirt and peat moss.
I recommend placing the cleaned plant in a separate jar of water for about two weeks before adding it to your main display. This allows the plant to grow “water roots,” which are physiologically different from soil roots.
During this quarantine period, you can monitor the plant for any signs of melting or rot. If a root turns mushy and brown, simply snip it off with sterilized scissors to prevent the spread of decay.
Once you see new, white, fuzzy roots appearing, your Philodendron is ready for the big move! You can now answer the question “can i put philodendron in fish tank” with confidence, knowing the plant is prepared.
To secure the plant, you can use aquarium-safe plant clips, suction cups with zip ties, or even specialized rim-mounted planters. The goal is to keep the crown (where the leaves meet the stem) above the water line.
The Critical Safety Rule: Submerged vs. Emersed Growth
One mistake I see beginners make is trying to push the entire plant underwater. This is a recipe for disaster. Philodendrons are not true aquatic plants; they are epiphytes or hemiepiphytes.
If the leaves are kept underwater for extended periods, they will eventually suffocate and rot. This decomposition will cause an ammonia spike that could potentially wipe out your entire fish population.
The rule is simple: roots in, leaves out. The stems can handle being partially submerged, but the leaf blades must remain in the open air to breathe and perform photosynthesis efficiently.
Another safety concern is the sap. Philodendrons contain calcium oxalate crystals, which are toxic if ingested in large quantities. However, in a standard aquarium, this is rarely an issue for the fish.
The main risk occurs when you trim the plant while it is still in the tank. If you cut a stem, the sap can leak into the water column. While small amounts are usually diluted, it is best practice to prune your plants outside the tank.
If you must prune inside the tank, do a 20-30% water change immediately afterward to ensure the water remains safe for sensitive inhabitants like Neocaridina shrimp or delicate Tetras.
Maintenance Tips for a Healthy Philodendron-Fish Synergy
Once your Philodendron is established, it requires very little maintenance. However, because it is such an efficient nutrient sponge, it can actually out-compete your submerged aquatic plants for food.
Keep an eye on your Iron and Potassium levels. If you notice the Philodendron leaves turning yellow (chlorosis) or developing small holes, you may need to supplement with a high-quality liquid fertilizer.
I suggest using a shrimp-safe fertilizer to ensure your invertebrates aren’t harmed by heavy metals. Even though the Philodendron is taking from the water, it still needs a balanced diet of micronutrients.
Light is another factor to consider. While Philodendrons are “low light” house plants, they still need a consistent light source. The light coming from your aquarium LED is often enough, provided it isn’t blocked by a heavy lid.
If your tank has a tight-fitting lid, you might need to get creative. Some hobbyists remove a section of the back plastic or use mesh screens to allow the vines to grow upward toward the room’s ambient light.
Periodically, you should gently rinse the roots during your weekly water changes. Debris and “mulm” can get trapped in the root mass, which can lead to anaerobic pockets if left undisturbed for months.
Common Troubleshooting for Riparium Plants
Even with the best intentions, things can sometimes go wrong. The most common issue is root rot. This usually happens if the water flow around the roots is stagnant or if the plant was not cleaned properly.
If you smell a foul, sulfur-like odor near the plant, pull it out immediately. Healthy roots should be white or light tan and firm to the touch. Slimy, black, or smelly roots must be removed.
Another issue is stunted growth. If your Philodendron isn’t putting out new leaves, it might not be getting enough light, or your nitrate levels might actually be too low (a rare but possible problem in understocked tanks).
You might also see pests like spider mites or mealybugs on the emersed leaves. Since you have fish below, you cannot use standard pesticides. Instead, use a cotton swab dipped in rubbing alcohol to spot-treat the pests.
Be careful with surface agitation. While fish love oxygenated water, constant splashing on the Philodendron leaves can cause mineral buildup or fungal spotting. Aim your filter output away from the foliage.
Lastly, remember that as the roots grow, they will take up swimming space. If you have large, active fish like Silver Dollars or goldfish, you may need to trim the roots occasionally to keep the tank navigable.
FAQ: Everything Else You Need to Know
Is Philodendron toxic to fish?
In 99% of cases, no. While the leaves contain calcium oxalate, fish generally do not eat them. The roots are safe to be in the water, and the plant actually improves water quality by removing toxins.
Can I put Philodendron in fish tank with a lid?
It is difficult but possible. You will need to leave a gap in the lid for the stems to exit. If the leaves are trapped in the high humidity under a lid, they are more prone to fungal infections and rot.
How long does it take for Philodendron roots to grow in water?
You will usually see the first signs of water roots within 7 to 14 days. A full, lush root system that provides significant filtration usually takes about 2 to 3 months to develop.
Will Philodendron kill my aquarium plants?
Not directly, but it can “starve” them. Because Philodendrons grow faster, they suck up nitrates and minerals quickly. You may need to increase your fertilization schedule for your submerged plants like Anubias or Java Fern.
Can I use a Philodendron cutting instead of a full plant?
Yes! In fact, starting with a cutting is often easier. Just make sure the cutting has at least one “node” (the bump on the stem where roots grow) submerged in the water.
Conclusion: Transforming Your Tank into a Lush Oasis
Adding a Philodendron to your aquarium is one of the most rewarding upgrades you can make. It bridges the gap between indoor gardening and fish keeping, creating a breathtaking “living wall” effect.
By now, you should feel confident answering “can i put philodendron in fish tank” for yourself and your fellow hobbyists. It is a simple, cost-effective way to keep your water crystal clear and your fish happy.
Remember to prioritize cleanliness during the transition, keep those leaves above the surface, and monitor your nutrient levels. Your fish will love the natural cover, and you will love the reduced maintenance!
If you’re ready to start, go grab a cutting from your favorite Heartleaf Philodendron and give it a try. There is nothing quite like seeing your fish swim through a curtain of vibrant, healthy tropical roots.
Happy fish keeping, and may your aquarium jungle thrive!
