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Ideal for air movement from an air pump to air stones
The monitor has a 3
77EC solution is used as a reference or checking solution to ensure you have adequately cleaned the EC/ppm probe
More consistent heating with fewer hot spots than other seedling heat mats on the market
Hydro-Logic Merlin GP Green Carbon Filter Ideal for air movement fromGreen Coconut Carbon Filters are the carbon block pre filter that will reduce chlorine, organic chemicals, VOCs, mercury, lead, PBCs, sulfur and heavy metals. #741604 is 20 in x 4. 5 in. #728845 is 20 in x 2. 5 in. #741646 is 10 in x 2. 5 in. #741656 is 20 in x 2. 5 in.
