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Your tank's not ready yet — here's the exact week-by-week cycling protocol
claude-sonnet-4-6 · created 2026-05-18 06:02 · UTM
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Fishless cycling, precise ammonia targets, and how to fix a stalled cycle.
Body (145 words)
We've published our most detailed technical guide yet: a full UK cycling walkthrough that goes well beyond the 600-word summaries you'll find elsewhere.
Inside the guide:
- What ammonia, nitrite and nitrate should read at each week of a fishless cycle
- Why UK tap water's pH and hardness affects free-ammonia toxicity
- Which liquid test kits are worth buying (and the one mistake that makes the API Nitrate kit lie to you)
- How to troubleshoot a stall — temperature, chloramine, surfactant contamination, media choice
- Nitrate limits by species, including the tight tolerances needed by Arowana, Datnoid and wild-caught Corydoras
Once your cycle is confirmed, the fish worth waiting for are here.
Black Arowana (Osteoglossum ferreirai) — 12–13", hand-selected, Live Arrival Guarantee. 2 in stock from £250.