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May be varying shades of blue or purple depending on the species and individual
Perfect for reef aquariums
These include mainly calcium and carbonate hardness elements for the growth of the calcareous skeletons of stony corals
alkalinity
(zeolite) or even other iron based products which claim to be the same product from other manufacturers
Hanna Phosphate Low Range Checker® HI713 aquascaping May be varying shades ofThe Hanna Phosphate Low Range Checker bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in color. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine ion concentration. Professional instrumentation offers
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