20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 4 Pack cloning-&-seed-starting 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

slow-release feedings in a fertilizer you can apply all season long

Maggots/Grubs

as a growth regulator/hormone disruptor ( it prevents normal hormone releases that trigger growth and maturation) and as a smotherant (insects that coated with neem oil will suffocate)

Home Cultivation – Perfect for hobbyist and enthusiast home growers seeking commercial-quality results without the complexity

20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 4 Pack cloning-&-seed-starting Perlite can be used asImportant 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,