This is for a Boyd Enterprises Chemi-Mat. The (2) 6" x 12" phosphate removal pads are good for salt and fresh water aquariums/ponds.
There is a 24 hour wet period before the pad starts to take effect. After 48 hours the pad is exhausted and should be thrown away. 

Please follow the directions

Shipping is $8 US, Canada $18, Everywhere else $28

Paypal only.