Phat Filters Pre-Filter, 39" x 12" Pre-Filter:Phat Filters Pre-Filter, 39" x 6" Thickened 360g nonwoven fabric allows

Thickened 360g nonwoven fabric allows the Vivosun grow bags to effortlessly stand upright

For use with magnetic ballasts only

With Bud Candy Organic OIM

Great for plants in the blooming stage

Phat Filters Pre-Filter, 39" x 12" Pre-Filter:Phat Filters Pre-Filter, 39" x 6" Thickened 360g nonwoven fabric allowsGet The Most Out Of Your Phat Filter! Phat Filter replacement pre filter replaces your used pre filter to give your Phat filter longer life by filtering out larger impurities before they have a chance to enter into the actual filter. Each pre filter is stamped with the Phat Filter logo and fits snugly over your Phat filter. The pre filter is available in all Phat Filter sizes and can be easily slid over the filter and secured with the plastic straps