20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 14 Plus Carbon 4 Pack Environmental Controllers PPM settings for tomatoes

PPM settings for tomatoes

(9) 1 gallon (8″) pots

Current Flow – 1

Grow1 collapsible water tanks are a great alternative to troublesome solid

Mini-Sachets/Sachets on Sticks: Place one sachet or stick per propagation tray or plant

20x25x5 (4 3/8) Lennox X6673_X6675 Replacement Air Filters MERV 14 Plus Carbon 4 Pack Environmental Controllers PPM settings for tomatoesImportant 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,