Lighting

How does dispersion impact light strength? What are the advantages of a wider light array? When does fixture spread matter?

There is a widespread belief that 6500K is the optimal value for photosynthesis in planted tank. Is this true?

Blue light suppresses inter-nodal stem distance in land plants, does this apply to aquatics?

Why are leaves green? Does green plants need green light? There is a widespread belief that plants do not use green light for photosynthesis.​ An insight research paper from the University of Tokyo suggests otherwise. Read on to find out more.

How to fine-tune light spectrum for better color and pigmentation for your planted tank.

We review the ongoing debate among freshwater aquarists on the relative merits of LEDs vs fluorescent T5 tubes.

How much does 'the 'colour rendering index', or CRI, matters when it comes to choosing between lights / bulbs for your planted tank?

 

A deeper discourse on the term K rating, its applications and its impact on planted aquariums.

What exactly is Photosynthetically Active Radiation (PAR)? How do I make sense of PAR tables?

A deeper exploration into the relationship between light spectrum and photosynthesis; and the difference in absorption vs action spectrum.

While LEDs look fantastically sleek and are becoming increasingly popular, most do not bring out the best colour in plants. The ones shown here are what we consider to be the best options currently available.

How to choose aquarium light for your planted tank? Focus on 3 key factors - Strength, spectrum and Spread. Aquarium light can affect everything from plants coloration, growth rates and even algae control. Read on to learn more about strength, spectrum and spread for aquarium lights.