ReefATLAS PAR Estimator
Reef PAR Estimator
About
This app helps reef aquarium enthusiasts estimate and visualize light distribution without a PAR meter. It allows users to input tank dimensions, lighting equipment, and water conditions to predict PAR levels and make informed decisions about coral placement and lighting setups. The tool offers interactive 3D visualizations and supports a wide range of popular reef lighting systems.
What's New in ReefATLAS PAR Estimator
1.0.4
June 22, 2026
Version 1.0.4 adds a new Light Setup workflow for modeling multi-light reef tank layouts. You can now build fixture arrays, place multiple lights on a top-down tank grid, mix supported light models, set individual mounting heights, rotate fixtures, adjust fixture angle, and group linked lights with master/slave controls. This update also improves PAR calculations for multi-fixture setups by calculating each fixture’s contribution separately and combining overlapping light output in the 3D heatmap. Additional improvements include grouped spectrum controls, manufacturer-style presets where available, physical fixture size modeling, improved array visualization, corrected preset selection behavior, corrected output percentage reporting for array setups, improved Light Setup launch position, improved beam display for bar lights, and iPhone layout refinements.
MoreSubscription plans
ReefATLAS PAR Estimator Monthly
Subscription required to use ReefATLAS PAR Estimator.
FAQ
What is ReefATLAS PAR Estimator?
ReefATLAS PAR Estimator is a subscription-based application designed for reef aquarium hobbyists and professionals. It helps users estimate and visualize PAR (Photosynthetically Active Radiation) light distribution within their aquariums without the need for a physical PAR meter.
How does ReefATLAS PAR Estimator work?
The app works by allowing users to input detailed information about their aquarium, including dimensions, lighting equipment, mounting height, spectrum settings, water conditions, and lid transmission. It then generates an interactive 3D PAR heatmap visualization to predict light levels across the tank.
What lighting systems are supported by ReefATLAS PAR Estimator?
The app supports a wide array of popular reef aquarium lighting systems, including brands like AquaIllumination, EcoTech Marine, Kessil, Red Sea, and many more. A comprehensive and regularly updated list is available on their website.
Can I use ReefATLAS PAR Estimator for multiple lights in my tank?
Yes, the app features a Light Setup tool that allows for multi-fixture light array configurations. You can place multiple fixtures, including mixed models, adjust their heights, positions, rotation, and angles to simulate complex lighting setups.
Is ReefATLAS PAR Estimator free to use?
ReefATLAS PAR Estimator operates on a subscription model. While the app is listed as 'Free' in the app store, access to its full functionality requires a subscription, with a monthly plan available for $4.99.
What is the subscription cost for ReefATLAS PAR Estimator?
The subscription plan offered is ReefATLAS PAR Estimator Monthly, priced at $4.99 per month. This grants users access to all features for analyzing and estimating aquarium lighting.
Does ReefATLAS PAR Estimator have ads?
No, ReefATLAS PAR Estimator does not contain advertisements. As a subscription-based service, the focus is on providing an uninterrupted user experience for aquarium lighting analysis.
How often is ReefATLAS PAR Estimator updated?
The app was last updated on June 22, 2026, with version 1.0.4. New lights and tank models are added regularly, and users can submit requests for unlisted equipment.