Today’s update is a classic beginner mistake — but worth documenting. I miscalculated the grow media volume. Because of that error, the total media cost for 4 grow beds turned out to be almost 4× higher than my original estimate.Not a small difference — enough to force a rethink. What I’m changing 👇 Instead of filling all 4 grow beds with the same media: • 2 grow beds → Styrofoam rafts (DWC) for iceberg lettuce • 2 grow beds → Lava rock for cabbage & kale This hybrid setup keeps the system functional while significantly reducing upfront cost. Media numbers (important part) For 2 grow beds with lava rock: • Total lava rock needed: ~500 kg • Cost range: 12,000 – 15,000 CZK • That’s roughly $500 – $630 USD If I had filled all 4 beds with lava rock, the number would’ve been painful enough to slow the whole project down. What I’m doing next • I’m actively researching cheaper IBC tank and Media (lava rocks) sources • Looking for better local suppliers and logistics options • No purchase yet — documenting before locking decisions Lesson learned 🧠 • Small calculation errors scale fast • Grow media is not a “minor” cost • Hybrid systems = flexibility for beginners No panic, no rushing — just adjusting the plan and moving forward. More updates soon as I finalize sourcing.

Building a 3–4 IBC Aquaponics System on a Budget 💧🌱 Cheb, Czech Republic 🇨🇿 Outside: -6 to -15°C ❄️ Building: not yet Planning: full speed ✅ Since winter won’t allow construction yet, I’m using this time to prepare everything properly for my spring aquaponics pilot. The goal: A small but scalable system that I can later adapt for Mindanao conditions. Local sourcing (Cheb / Karlovarský kraj): • 3× IBC tanks (1000L): $70–75 each → $210–225 • 2× 200L barrels (filter + sump): $15–20 each → $30–40 • Water pump: $70–75 (BOYU FP-4000) • Air pump: $95–100 (Resun LP-40 / Hiblow HP-40 / Aquaking Q2007) • Grow media: $200–220 → 600kg basalt 8–16mm (lava rock is too expensive here) • Fittings & plumbing: $25–50 (hopefully 😅) Estimated total: 👉 $630–710 for a complete pilot system Sources: Bazoš.cz, Facebook Marketplace, local garden shops. 🔎 Important note: Always check what the IBCs were used for – food-grade only. Why I like this setup: • cheap to build • easy to expand • realistic to copy later in the Philippines 👉 Your turn: • What aquaponics budget are you aiming for? • Any hacks or cheaper alternatives you’ve found? Let’s compare and learn together.