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Plastic bio-materials provide only external surface area
It is safe for dipping stony and soft corals
The solution will turn to purple and finally blue
we recommend Alkaline Buffer
Aqueon Preset Aquarium Heater 150 Watts Seachem Iodide Test Kit Plastic bio-materials provide only externalAqueon Preset Aquarium Heaters require no adjusting! The preset temperature has been calibrated to 78, appropriate for most tropical fish. It is fully submersible, constructed of shatter resistant quartz glass and features an automatic safety shut off to avoid overheating. The heaters include suction cups and can be placed vertically or horizontally within the aquarium. An LED indicator light displays red when actively heating. Available in different