16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 12 Pleated Plus Carbon 1 Pack fans-ventilation-ducting Professional growers know the ideal

Professional growers know the ideal position for drying their prized harvests: Hang them vertically

Solar Gaia is intended for use throughout the vegetative stage and early flowering stage of growth

Big Rootz devotees won’t grow with anything else

Mix Athena Cleanse at a rate of 5-10 mL/ gallon of water during the final flush stage to help reduce residual mineral buildup in the growing media and plant tissues

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 12 Pleated Plus Carbon 1 Pack fans-ventilation-ducting Professional growers know the idealImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,