6x20x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack harvest-solution Perlite can be used as

Perlite can be used as a stand-alone medium in drip systems or as a mix-in element with other growth mediums

Adding more of THE GRAND DADDY PADS will increase your PPM's in your specific area

Adjustable head with 4 angle settings - 45

Fill the reservoir with your desired watering liquid and you are ready to water

This pump is very quiet and runs from a manual on/off switch

6x20x1 MERV 8 Plus Carbon AC Furnace Filters 6 Pack harvest-solution Perlite can be used asNordic Pure Custom MERV 8 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition