The Appeal of Planted Aquariums and What You Should Know Before Starting
A planted aquarium, often called an "aquascaping," is an artistic hobby that recreates natural aquatic landscapes within a tank. A well-designed planted aquarium looks like an underwater forest or meadow, and watching tropical fish swim through it soothes the fatigue of daily life. However, maintaining a beautiful planted aquarium requires properly controlling multiple elements such as lighting, CO2, fertilizers, and water quality management.
In this article, we systematically explain the fundamentals of aquascaping for both beginners taking on a planted aquarium for the first time and intermediate hobbyists looking to level up their skills.
Basics of Layout | Composition and Material Selection
Planted aquarium design starts with "composition." There are three main types of composition:
Convex Composition (Dome Type): A style with the center high and sides low. It has a stable appearance and is easy to balance, making it ideal for beginners. The standard approach is to place fast-growing stem plants like Hygrophila and Ludwigia in the center.
Concave Composition (Valley Type): A composition with the sides high and the center low. This creates depth and can produce a sense of perspective. It is effective to place foreground plants like Glossostigma and Hair Grass in the low center area.
Triangular Composition: A composition with one side high and descending diagonally toward the other. This easily expresses flow and dynamism, and is often used in Nature Aquariums.
Popular substrate materials include volcanic rock (lava rock), pumice stone (sky stone), and driftwood. Rocks vary in their properties—some raise pH while others maintain neutral levels—so select them based on the appropriate water quality for the plants you want to cultivate. For example, coral stone and limestone-based rocks increase hardness, making them unsuitable for most aquatic plants.
The basic substrate to use is aquatic plant-specific soil (such as ADA Amazonia or JUN Platinum Soil). It provides superior root development and nutrient supply compared to general gravel or sand.
The Importance of and Methods for CO2 Addition
In photosynthesis of aquatic plants, CO2 (carbon dioxide) is as essential as light. Without sufficient CO2, plants cannot grow adequately and will be outcompeted by algae.
Fermentation-based CO2: A method of generating CO2 using sugar and yeast. It is low-cost and easy for beginners to implement, but has the drawback of unstable CO2 production. It is well-suited for small aquariums (30–45 cm tanks).
CO2 Cylinder System (Small and Large): A system using a dedicated CO2 cylinder, solenoid valve, and needle valve. Because CO2 output can be precisely controlled, it is strongly recommended for tanks 60 cm or larger. Best practice is to link the solenoid valve to a timer and automatically turn it on and off to match the lighting period.
A general starting point for CO2 addition is 1–2 bubbles per second. Adjust based on plant types, quantity, and tank size. Excessive addition can impact fish, so it is safer to stop CO2 addition at night while using aeration.
A diffuser plays the role of dissolving fine bubbles into the water. Using a high-quality glass diffuser increases dissolution efficiency.
How to Choose Lighting and Light Intensity and Spectrum
Proper lighting is necessary to maximize photosynthetic efficiency in aquatic plants. Light intensity is measured in lumens (lm) or PPFD (μmol/m²/s).
Light Intensity Guidelines:
- Low-light plants (such as Anubias and Microsorum): Low to medium light intensity (approximately 2000–4000 lm)
- High-light plants (such as Glossostigma and Hair Grass): High light intensity (4000 lm or more)
LED lighting is now the mainstream in the aquarium market. Brands such as ADA (Aqua Design Amano) Solar RGB, Chihiros, and Finnex are popular, and choosing products that balance red, green, and blue light spectra improves aquatic plant coloration.
A standard lighting period is 8–10 hours per day. Using a timer to turn lights on and off at the same time daily establishes plant rhythm and helps suppress algae growth. During initial setup, start with approximately 6 hours and gradually increase, which is effective for algae prevention.
Fertilizer Management | Balancing Liquid and Solid Fertilizers
Aquatic plants require various minerals and trace elements in addition to light and CO2. While soil contains initial nutrients, these become depleted over time, necessitating supplementary fertilization.
Liquid Fertilizers: These provide uniform nutrient distribution throughout the tank. An advanced approach is to manage macronutrients (nitrogen, phosphorus, potassium) and micronutrients (iron, manganese, zinc) separately. ADA's Green Brighty series and FERTILIZER brand are popular.
Solid Fertilizers (Substrate Fertilizers): These are embedded in substrate or soil. They are especially effective for stem plants and larger aquatic plants that absorb nutrients directly through roots. Initial Sticks and Controsoil are representative products.
Excess fertilization causes algae blooms, so the golden rule is to "start with small amounts and increase while monitoring plant condition." Yellowing leaves may indicate nitrogen or magnesium deficiency, while stunted growth may indicate potassium or trace element deficiency.
Water Quality Management and Algae Prevention
Water quality management and algae prevention are inseparable topics in maintaining a planted aquarium long-term.
Target Water Parameters:
- pH: 6.5–7.0 (slightly acidic is optimal for most aquatic plants)
- GH (Total Hardness): 4–8 dH
- KH (Carbonate Hardness): 2–5 dH
- Water Temperature: 24–26°C
A basic maintenance cycle is to perform a water change of approximately one-third of the tank volume once weekly. As plants become more abundant, their consumption increases, so adjust water change frequency flexibly based on tank conditions.
It is wise to use livestock to control algae. Otocinclus and Siamese Flying Foxes eat algae on tank walls and leaves. Amano shrimp and dwarf shrimp excel at handling uneaten food and thread algae. Additionally, since algae often results from a combination of nutrient excess, excessive light, and CO2 deficiency, reviewing the balance of these three elements is the fundamental solution.
Summary | Aquascaping is an Art of "Balance"
The beauty of a planted aquarium is realized only when all elements—lighting, CO2, fertilizers, water quality, and livestock—maintain proper balance. There is no need to aim for perfection from the start. The true pleasure of aquascaping lies in starting with a small tank and simple composition, then gradually adjusting while observing plant growth.
At br-choku.com, you can purchase tropical fish suitable for aquascaping and livestock compatible with aquatic plants directly from breeders. Starting with healthy livestock is the shortest path to creating a beautiful aquarium.
