New • AH-Reef

AH-Reef PAR + UVA Meter

Underwater PAR and UVA made easy. Measure PAR (400–700 nm) and UVA irradiance, view R/G/B %, and map light distribution with an IP-rated waterproof probe.

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Underwater
IP-rated probe
Mapping
99 points
Records
Up to 99
AH-Reef PAR + UVA Meter with waterproof probe

Built for coral lighting decisions

Get reliable numbers for SPS/LPS placement, shading, and fixture tuning.

PAR + UVA together

See PAR (µmol/m²/s) and UVA (W/m²) side-by-side to balance intensity and spectrum for your reef.

R/G/B percent

Quickly gauge spectral balance with live R/G/B % readouts for easy fixture tweaks.

Waterproof probe

IP-rated probe designed for tank submersion—map your aquascape exactly where corals live.

99-point mapping

Record a full grid and visualize light distribution to spot hot spots and shadows.

Hold & Record

Freeze a reading or store up to 99 points as you move across rockwork and depths.

Lab-checked accuracy

Confidence-ready readings for consistent coral placement and acclimation.

How it works

1) Place at coral level

Submerge the probe to the exact depth/spot where your corals live—sand bed, mid-level, or top.

2) Map the grid

Use Hold/Record to capture up to 99 points across your tank and rockwork.

3) Tune & place

Review PAR/UVA and R/G/B % to set fixtures, reduce shadows, and place SPS/LPS with confidence.

Specifications

Measurements
PAR (Photosynthetically Active Radiation, 400–700 nm) and UVA irradiance (displayed in W/m²)
Spectral view
Live R/G/B percentage
Mapping
Hold & Record modes, up to 99 stored points
Probe
IP-rated waterproof for aquarium submersion
Use cases
Coral placement, lighting tuning, shadow detection, acclimation
Model
AH-Reef

Note: Specifications may change with firmware updates. Refer to the product listing for latest details.

Where it shines

SPS & LPS placement

Hit PAR targets for delicate SPS or light-hungry LPS, tank-wide.

Fixture tuning

Adjust channels using PAR/UVA and R/G/B % to balance color and growth.

Shadow control

Map rockwork to eliminate dead zones caused by overhangs and aquascape angles.

FAQ

Is the probe waterproof?
Yes. The probe is IP-rated for aquarium submersion—designed for reef tanks.
What does UVA help with?
UVA (displayed in W/m²) complements PAR readings to understand total light exposure and spectral balance.
Can I store and review multiple points?
Yes—use Hold & Record to capture up to 99 readings for 99-point mapping.

Ready to map your reef lighting?

Underwater PAR & UVA, R/G/B %, and 99-point mapping in one handheld tool.

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