Waterproof PAR meters are expensive so most aquarists have no way to measure what their light puts off.įor this article, we used a super nifty PAR meter to take readings for all of the lights we used in this head-to-head challenge. Most hobbyists don’t have any way to measure what kind of PAR their aquarium lights are putting off. So, something that might have a PAR of 400 at the water’s surface might only have a PAR of 70 when the light hits the substrate. Just because a light is visible to us and seems bright does not mean that it has the right spectrum to grow plants in a freshwater tank.Īnd, PAR decreases the farther the light travels. So, it’s an important measure of whether or not a particular light will be able to grow plants and what kind of plants it would be good for. The higher the PAR, the more energy that plants can draw from the light. Yep, try and say that five times fast.īasically, PAR is the measure of the radiation coming from a light source that organisms can use to carry out photosynthesis. PAR stands for photosynthetically active radiation. Here’s how I tested each of the LED lighting kits: PAR Readings Test Last update on / Commissions Earned / Images from Amazon Product Advertising API How The Lights Were Tested NICREW ClassicLED Plus LED Aquarium Light with Timer, 27 Watts, for 36 to 48 Inch Fish Tank Light. Hygger 36W 24/7 Lighting Aquarium LED Light, Sunrise-Daylight-Moonlight Mode and DIY Mode.ĬURRENT Satellite Freshwater LED Plus Full Spectrum RGB+W Light for Aquariums 36''-48'' with.īeamsWork Vivio Full Spectrum LED Timer Adjustable Dimmer Aquarium Fish Tank Light Freshwater 12 20. Fluval Plant 3.0 LED Planted Aquarium Lighting, 46 Watts, 36-46 Inches
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