20x25x4 (3 5/8) Pleated MERV 14 Air Filters 2 Pack timers-and-instruments Bill's Perfect Fertilizer is a

Bill's Perfect Fertilizer is a high-phosphorus foliar fertilizer formulated to dramatically increase blooming and plant growth

"Chemboys Nutrient Line Beta (0-4-3) Formula is part B of a 2 part A/B nutritional program that helps to start your grow off right by keeping your plants strong and healthy through the grow season

The EC/TDS conversion factor is user-selectable as well as the temperature compensation coefficient (

This will significantly increase worm reproduction and speed up soil improvement

Currently utilized in over 2

20x25x4 (3 5/8) Pleated MERV 14 Air Filters 2 Pack timers-and-instruments Bill's Perfect Fertilizer is aImportant 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. If you are replacing a 4 3 8 depth 20x25x4 filter