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The refugium light cycle can be operated opposite to the main tank, in order to keep total system pH more stable (due to the uptake of acid-forming CO 2 by photosynthesis occurring in the refugium during its "daylight" hours). One volume guideline for a refugium is 1:10 main tank volume.
The refugium and sump are often housed in a single tank with a system of dividers to separate the compartments. Lighting: Several lighting options are available for the reef-keeper and are tailored to the types of coral kept. Canopy: The canopy houses the light fixtures and provides access to the tank for feeding and maintenance.
Gracilaria parvispora in a refugium, displaying dark coloration under high intensity lighting.. Gracilaria parvispora is composed of pointed, cylindrical branches, 1–4 mm (0.0–0.2 in) in diameter, extending from a central axis, 0.8–3.5 mm (0.0–0.1 in) in diameter, with a single holdfast.
This popular and vibrant species features stiff, blotchy purplish-light red to deep red blades, based on lighting conditions (however, it will turn grey under excessively high intensity light). Additionally, it is highly palatable to larger herbivorous fish and makes for a good refugium addition.
In biology, a refugium (plural: refugia) is a location which supports an isolated or relict population of a once more widespread species. This isolation ( allopatry ) can be due to climatic changes, geography, or human activities such as deforestation and overhunting.
Aquarium with LED lighting. Freshwater aquarium lighting is commonly provided by screw-in incandescent bulbs, fluorescent tubes and LED lamps.Incandescent lighting is becoming less popular because it uses much more energy and produces more heat than the other lighting types. [1]
Initially at Grateful Life, Hamm wasn’t allowed to bring in non-spiritual materials like novels or newspapers — a restriction inherited from the older “therapeutic community” models — or to wear street clothes. He attended classes in light blue surgical scrubs, a public humbling that all newbies were subjected to.
An algae scrubber is a water filtering device which uses light to grow algae; in this process, undesirable chemicals are removed from the water. [1] Algae scrubbers allow hobbyists to operate their saltwater or freshwater tanks or ponds using natural filtration based on primary production , much as occurs in oceans and lakes.
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