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Place the test vial on the white part of the colour chart and compare colours looking from the TOP
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The R420R Lighting system also utilizes the 410/420nm Super Actinic LED chips
It is in fact a mechanical filter as well
Brightwell Aquatics Xport NO3 - Dimpled Brick freshwater plant Place the test vial onDimpled Brick the premier filtration media in the world! Xport NO3 Ultra activated Denitrification Media with Superior Performance Characteristics. Overview: Utilizes NanoIntelex Technology to create an enhanced, "ultra activated" material with the capacity to outperform conventional denitrification media by over 300% Open structure and high surface area results in superior flow through characteristics and filtration efficiency. Higher efficiency