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We recommend using yellow corals as indicators
a patented compound
and survival
IMPORTANT: If the carbonate hardness is above 14dKH (which corresponds to an alkalinity of 3 meq/L) addition of 2 level spoons in step #2 is required
ISTA CO2 Controller ROWA We recommend using yellow coralsSpecifications of the ISTA CO2 Controller Equipped with German made solenoid safety valve to prevent accidents if overpressure occurs. Silent operation. Precision needle valve ensures stable and accurate CO dosing output. Stainless steel, anti rust Easy to assemble by hands. No tool required. Dual gauges : One guage indicates the pressure in the cylinder, and the other guage shows the depressurise power (output pressure in the aquarium).
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