This paper is a continuation of Dana Riddle’s first article: Light Data from a Hawaiian Tidepool

There are many variables to consider when deciding which lighting system to purchase or how to utilize that light.…

A question I commonly ask during a presentation is ‘How many own a PAR meter’? I am often pleasantly surprised to learn that light measurement is coming more common among reef hobbyists.…

While every hobbyist realizes lighting is an important aspect of successful reef-keeping, there is still much debate about intensity, spectral quality, and photoperiod. This article will flesh out some of the information I presented at the 2013 Marine Aquarium Conference of North America (MACNA) held in Fort Lauderdale, Florida (I had 45 minutes to present the information which could have easily been a two-day class).…

Perhaps the most popular metric used in evaluating the performance of aquarium pumps has been rate of flow, usually expressed in gallons or liters per hour (g.p.h., or l.p.h., respectively). However, there is more (or correctly, less) to the story.…

Build My LED is a newcomer to the aquarium lighting market. This company, based in Austin, Texas, is unique in that they offer the consumer the option of custom-configuring their lighting system.…

It was 2005 when I last wrote an article presenting results of a comparison between Photosynthetically Active Radiation (PAR) meters, and the lamps used during testing were metal halides of various kelvin ratings (see Riddle, 2007).…

Maintaining coral coloration is the goal of many reef hobbyists, but is often a source of frustration. Most hobby literature I’ve seen concerning the maintenance of coral coloration in captivity involves lighting (an important consideration!)…

This article will conclude the product review series of EcoTech Marine’s propeller pumps, and our focus this time will be upon the largest of their currently available pump and controller, the MP60.…

The art and science of reefkeeping continues its steady progression with introductions of equipment that we only dreamed about in the hobby’s early days. Early on, it was recognized that lighting was critical while water motion received relatively little attention.…

While a great deal of interest has been shown in the characteristics of artificial daylight for reef aquaria, very little attention has been paid to the other natural illumination – moonlight.…