Arcadia freshwater lamp 8w 12 300mmr the freshwater lamp has been specifically formulated to provide a uniquely created colour temperature peaking in the green part of the spectrum it also provides superb colour rendition enhancing all the natural colours to be found within typical freshwater aquariar r shows the rich greens of plantsr encourages plant growthr brightens the natural colours of fishr r this 8w tube is thinner than standard tubes at 58