Oregon's Only's answer to phosphate rich guano tea. Derived from seabird guano, digested worm humus and mineral-rich Atlantic kelp, you can't go wrong with this triple-filtered, salt-free and grit-free bloom enhancer. Like no other liquid guano, you will find the availability second to none. If it’s more phosphorous you want, then make the right decision for your plants and give them a salt-free tea.