Aquarium Water Checker - When To Use It
Aquarium Water Checker is worth opening whenever the real question is a trend: is the water clearer or cloudier than it was? It compares two photos of the same tank on your device, scores each one 0 to 100, and says which way things moved - with no upload and nothing installed.
When it fits
Typical moments: the tank turned milky after a new setup or a gravel disturbance and you want to know if the bloom is fading; you dosed bacteria or added filter floss yesterday and want proof it helped; you changed water and the cloudiness looks worse instead of better; or you simply want a weekly clarity log without buying anything. Because eyes adapt to slow change, the measured delta often contradicts your impression - that is exactly the case the tool exists for.
When it does not fit
No photo can measure ammonia, nitrite, nitrate, pH or temperature. If fish are gasping at the surface, resting on the bottom with clamped fins, or you suspect a spike, reach for a liquid test kit first - the photo check is a trend instrument between tests, not a replacement for them. It also does not diagnose fish diseases.
What to expect
A swipe-to-compare slider over your two photos, a named cloudiness pattern (milky bloom, suspended dust, green algae direction, or amber tannin tint), and a short prioritized action list such as a feeding pause or finer filter floss. When your photos carry a capture time, the report also says how many hours or days apart the two states are.
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