Big Kahuna Bulk GFH 10 lb.

COMPOSITION: Ferric Oxide Hydroxide

PURPOSE: To be used in fresh and salt water aquariums to remove large quantities of phosphate, silicates, arsenic and some heavy metals.

BENEFITS: Maintains extremely low to non-measurable levels of phosphate and silicates thus greatly reducing propagation of algae. Removes arsenic and other heavy metals. Safe for the most delicate invertebrates – does not contaminate water with iron. Extremely low impact on trace elements and desirable fertilizers like potassium. Non-leaching, permanently and irreversibly binds phosphate and silicates. Convenient to implement, comes with a 6” x 12” 300-micron media bag.

DIRECTIONS: Place GFH into the enclosed media bag and place inside any filter. Make sure that the water flows through the media without bypass. A media reactor may be used for more efficient usage. Adjust the flow rate through contact chamber that it does not tumble media too aggressively.

APPLICATIONS: Media bag with GFH can be placed inside of: canister filters, power filters, sumps, refugiums, corner filters, next to uplift tube on UG filter plate. GFH can be placed directly into Bio-Bags or other fine floss bags. In canister filters that get infrequent servicing, many months worth of GFH can be put into service all at once. GFH never leaches phosphates back into water.

USAGE: For fresh water aquariums use 1 tablespoon (TBS) of GFH per 50 gallons of water monthly. For salt water and crowded freshwater tanks use 1 TBS of GFH per 25 gallons of water monthly. For reef and planted aquariums use 1 TBS per 20 gallons of water, monitor phosphate levels with a test kit and keep levels below 0.05 ppm. Replace media as necessary when phosphates rise. To clean up a well established tank, triple the standard usage dose. Mechanically remove as much algae through scraping as possible and vacuum the gravel bed thoroughly. Store GFH in a tightly closed container.