Bioscape CO2 Reagent A 200g Citric Acid $15.26 Out of stock Description Brand Description Bioscape CO2 Reagent A 200g Citric Acid. Bioscape CO2 Reactors need both Reagent A Citric Acid& Reagent B Sodium bicarbonate (Bicarb Soda). Brand Bioscape Related products Quick View 34 Points Quick View Red Sea Ammonia Test Kit $34.00 Add to cart Quick View 38 Points Out of Stock Quick View Red Sea Iodine Pro Test Refill $38.00 Read more Quick View 168 Points Quick View Hanna – Salinity Checker HI98319 $168.00 Add to cart Quick View 37 Points Out of Stock Quick View Aquaforest Magnesium Test Kit $37.00 Read more Quick View 56 Points Quick View Red Sea KhAlkalinity Pro Test Kit $56.00 Add to cart Quick View 69 Points Quick View Red Sea Nitrate Pro Test Kit $69.00 Add to cart