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- No formation of by-products (e
The denitrification catalyst supplied with the blocks increases the bacteria production within the massive surface area and ideal living conditions on the inside of the blocks
No chemicals are involved and there is no risk of dangerous overdosing
dino-x is intended for use in marine aquariums only
Made from acrylic plastic
D-D H2Ocean Refractometer With Seawater Calibration Live Sand - No formation of by-productsD D H2Ocean Refractometer is a hand held instrument for the measurement of the TRUE Salinity and Specific Gravity (S. G.) of sea water by refractive index. Easy to read. Has a copper internal body to conduct heat faster than aluminium and plastic. Auto temperature compensation (ATC) ranging from 5 to 30 degrees Celsius. Highly accurate. Easy to calibrate. A new finer scale running from 20 40ppt salinity (SG 1. 015 1. 030)