Hanna Instruments - Checker Handheld Colorimeter Marine Calcium pagoda the pump on the DOS

the pump on the DOS can handle 4x the flow of the most common pump style on the market

specifically formulated to establish biological filtration in new aquarium set-ups

Removable surface-skimming combs surround the top of the centrally located overflow box that houses the downpipe

Coral RX 2

This is done by nitrifying bacteria

Hanna Instruments - Checker Handheld Colorimeter Marine Calcium pagoda the pump on the DOSThe Hanna Marine Calcium 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 absorbance and ion concentration. Professional