16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack reflective-and-greenhouse-films simply because they have a

simply because they have a different bacteria in their gut that our micelle is not attracted to

The Ideal-Air 120 Pint Dehumidifier with Internal Condensate Pump gives serious growers the muscle to pull moisture out of the air at scale — up to 120 pints per day — while keeping maintenance simple and drainage completely flexible

so it is best to be added to solution prior to other nutrients - or diluted before adding to a nutrient solution

Use it for propagating cuttings and as a transplanting drench for newly potted plants

If you’re ready for real plant science

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 1 Pack reflective-and-greenhouse-films simply because they have 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. We also carry 4 7 8 and 5 1 4 inch depth filters,