This revolutionary product is big boost of CO2 in a little package. Now with a separate spore and substrate compartment, you activate the CO2 production when you need it, maximizing your CO2 enrichment for up to 9 months! CO2 production will begin in one week with peak CO2 production beginning after 30-45 days. CO2 will continue to be released for the remainder of 9 months. With 3 months of shelf life and 9 months of CO2, you’ve got yourself a Year!! That’s the ExHale 365!!
(Optimized for a 4′ x 4′ space. For larger areas, use one per light. Discounts on volume available.)