How to Grow Tomatoes in RDWC Hydroponics
Bigger Yields. Faster Growth. Cleaner Results.
Tomatoes are one of the most rewarding crops to grow in a hydroponic system but not just any system. RDWC (Recirculating Deep Water Culture) is ideal for tomatoes because it provides steady nutrients, deep root access, and high oxygen levels that support large, fruiting plants.
🍅 Why RDWC Is Perfect for Tomatoes
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Constant nutrient flow to fuel aggressive growth
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High oxygen levels to prevent root rot
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Deep buckets for massive root systems
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Easy upgrades as plants get bigger
Compared to soil or basic DWC, tomatoes in RDWC tend to grow faster, flower sooner, and yield more fruit with less nutrient waste.
🧪 Tomato RDWC Setup Basics
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Net Pot Size: 6–8 inches
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Water Temp: 65–70°F
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pH Range: 5.8–6.2
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EC Range: 2.0–3.5 during bloom
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Light Schedule: 18/6 veg → 12/12 flower (if using light-sensitive strains)
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Support: Trellis or cage required
🪴 Grow Timeline (General Guide)
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Germinate Seeds in rockwool or starter plugs
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Transplant into RDWC once roots are 2+ inches
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Veg for 3–4 weeks under strong LED lighting
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Switch to bloom nutrients as flowering begins
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Prune & support branches as fruit sets
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Harvest when tomatoes reach desired ripeness
🧠 Tips for Better Results
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Use strong air stones to keep oxygen high
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Top off your reservoir regularly tomatoes are thirsty
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Add Cal-Mag if you’re using RO water
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Keep airflow moving around the canopy to prevent mold
🔧 Upgrade As You Grow
Tomato roots get big — and fast. Our modular RDWC systems let you scale up easily by adding buckets, stronger pumps, or chillers as needed.
Already using our system? Contact us with your grow plan — we can supply parts to expand your setup.
✅ Start Growing Better Tomatoes Today
Whether you’re growing cherry tomatoes or full-size fruit, RDWC gives you better yields, cleaner results, and a more efficient grow cycle.