How to Set Up a Freshwater Planted Tank

A thriving planted aquarium is one of the most rewarding things in the hobby — a living, breathing aquascape that improves water quality and creates a stunning focal point. Here’s how to do it right from the start.

Step 1: Choose Your Tank

Any size works, but larger tanks are more forgiving. A 20–40 gallon tank is ideal for beginners. Ensure it gets adequate light — avoid direct sunlight, which causes algae explosions.

Step 2: Substrate

Plants need nutrients at their roots. Options include:

• Aquasoil (ADA, Fluval Stratum) — nutrient-rich, slightly lowers pH; ideal for most plants
• Capped sand/gravel — layer of nutrient substrate capped with sand for aesthetics
• Inert substrate + root tabs — budget-friendly; add fertilizer tabs at roots

Step 3: Hardscape

Add rocks and driftwood before water and plants. Popular choices:

• Seiryu stone or dragon stone for a dramatic iwagumi look
• Spider wood or manzanita for a natural forest feel
• Ohko stone for a lightweight, textured option

We carry a range of aquascaping rocks and wood in our Aquarium Supplies collection.

Step 4: Plant Selection

Start with easy, forgiving plants:

• Foreground: dwarf hairgrass, Monte Carlo, dwarf sagittaria
• Midground: crypts, java fern, anubias
• Background: vallisneria, Amazon sword, hornwort

Step 5: Lighting & CO2

Match your light to your plant demands. For high-tech tanks, pressurized CO2 injection dramatically accelerates growth and prevents algae. For low-tech tanks, liquid carbon supplements and low-light plants work well.

Step 6: Cycle Before Adding Fish

Run the tank through the nitrogen cycle (4–6 weeks) before adding livestock. See our Aquarium Cycling Guide for details.

Step 7: Fertilization

Plants need macro and micro nutrients. Dose a quality all-in-one liquid fertilizer weekly. We carry fertilizers from Aquaforest, AquaVitro, and Brightwell Aquatics in our Aquarium Supplies.

Ready to Start?

Browse our full range of aquascaping supplies, plants, and equipment at Concrete Blonde Aquatics.