TheArcadia Original Tropicalfluorescent tube is specifically conceived on the emphasis of red and blue peak values of the natural daily light, which are necessary for photosynthesis. The spectrum created also has the effect of highlighting the fluorescent features of fish such as neon and cardinal tetras, platys and guppies, bringing out and enhancing their highly attractive natural colours, making them appear to shine even more brightly. The lamp tends to have a purple/pinkish tinge, which creates a very warm appearance in the aquarium, which many aquarists are familiar with. The two wavebands which optimise both photosynthesis and chlorophyll synthesis have been enhanced in the Arcadia Original Tropical lamp. The effect of these wavebands is to actively promote healthy and well-balanced plant growth. The lamp also has the effect of bringing out the red and brown colours which often occur in aquarium plants such as ludwigia.