ZARC Water Health Scanner

Know What's
In Your
Water.

AI-powered water quality analysis for aquarium and pond hobbyists. Point your camera. Get an instant diagnosis.

Scan your water free — no signup needed

Free forever for 5 scans/month No credit card required Results in seconds

↓
The output

This Is What You Get

A real scan of a freshwater planted tank. Not a mockup — actual WaterDoc output.

INPUT / 20GAL PLANTED TANK
▣
SCAN_READY
INPUT · 20gal Planted Tank
WATERDOC / SCAN RESULT
scan_type: water · planted_tank
74
/ 100
Health Score
Detected Conditions
Warning Early staghorn algae on filter intake — CO₂ instability likely cause.
Good Plants showing active pearling — CO₂ and light balance adequate during photoperiod.
Watch Slight interveinal chlorosis on older Rotala leaves — possible iron deficiency.
Recommended Products
Seachem Flourish Iron CO₂ Drop Checker 3% H₂O₂ spot treatment
Scan types

Three Ways to Diagnose

Pick your scan type, upload a photo, get a diagnosis. Planted tank mode is folded into Water Quality.

Water Quality
Detects ammonia spikes, algae blooms, pH crashes, oxygen issues, and parameter imbalances. Works for aquarium, pond, reef, planted, and quarantine tanks.
Example output
Detected: Early green water (Chlorella bloom)
Risk: Medium · Confidence: High
Action: 3-day blackout + UV sterilizer
Fish Health
Identifies visible disease signs — ich, velvet, fin rot, columnaris, external parasites, anchor worm, and more. Upload a close-up of your fish.
Example output
Detected: Early-stage ich on betta
Risk: High · Confidence: High
Action: Raise temp to 86°F + Ich-X treatment
Algae ID
Identifies the exact algae species from a photo — BBA, hair algae, cyano, GSA, staghorn, diatoms, dinoflagellates, and 60+ more types across freshwater and reef.
Example output
Detected: Black beard algae (Audouinella)
Risk: Medium · Confidence: High
Action: Stabilise CO₂ + H₂O₂ spot treat
Data & accuracy

Why Aquarists Choose WaterDoc

1,000+

Reference entries covering water chemistry, fish disease, plant deficiencies, and algae across every hobbyist water type.

FishBase API — official global fish database
EPA Water Quality Portal — aquatic life criteria
Merck Veterinary Manual — disease reference
USDA APHIS — aquatic animal health
Peer-reviewed aquaculture literature
Koivet, Seriously Fish, Aquarium Science
01 / RAG
Retrieval-Augmented Generation
Before Claude analyses your photo, it retrieves the 20 most relevant reference entries for your water type and scan type. The AI cross-references, it doesn't hallucinate.
02 / PARAMETERS
Test Kit Integration
Enter your ammonia, nitrite, nitrate, pH, temp, KH, GH, and TDS readings. WaterDoc treats them as ground truth — visual analysis plus water chemistry together.
03 / PROFILES
Tank-Aware Diagnosis
Save your species list, tank type, and volume. Every scan is contextualised to your specific setup — not a generic freshwater tank.
Pricing

Simple. Honest.

Start free. Upgrade when you need more.

Free
$0
forever
  • 5 scans per month
  • All 4 scan types — water, fish, algae, plants
  • Full AI score + findings every scan
  • Dosing calculator
Start Free →
Pro
$7.99
per month
  • 50 scans per month
  • Enough to check every tank weekly
  • Catch disease and chemical shifts early
  • Daily quarantine monitoring through the 28-day window
  • Track algae trends across multiple tanks
Upgrade to Pro →

Need a top-up? Credit packs never expire — 5 for $4.99 · 10 for $8.99 · 50 for $14.99.

Your Tank Is Telling
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