Zavyro Magazine

Aquarium Guides

Practical, source-aware guides that turn everyday pet decisions into clear measurements, checks and next steps.

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Aquarium Guides

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A hand holding a dosing cap above a planted aquarium, with the water line and gravel that set the real dosing volume

Aquarium & Water CareTool9 min read

API Ammo-Lock Dosage: Chart and Calculator by Tank Size

API's label dose for AMMO-LOCK is 5 mL per 10 US gallons of aquarium water, every 2 days. A chart for common tank sizes,...

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Two unbranded aquarium water conditioner bottles beside a planted tank, marked with the three points compared: claims, dose rate and duration

Aquarium & Water Care7 min read

API AMMO-LOCK vs Seachem Prime: A Sourced Comparison

A neutral, fully sourced side-by-side comparison of API AMMO-LOCK and Seachem Prime, based only on what each manufacturer publishes: ammonia, nitrite and nitrate claims,...

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A green ammonia test result beside an aquarium test kit during a partial water change, with the siphon bucket in view

Aquarium & Water Care8 min read

High Ammonia in an Aquarium: What to Do

A step-by-step guide to a high ammonia reading in a fish tank: what the number means, what causes it, the emergency order of operations,...

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