Air Bear 16x25x5 (4 7/8) Air Filter Replacement MERV 13 Plus Carbon 2 Pack air-purification process pH glass electrode (platinum

process pH glass electrode (platinum for ORP) which is compared to a reference electrode in KCL solution

Utility Submersible Pumps by Active Aqua are tough

Early-season and pre-bloom applications are most effective

Silver Bullet Trimmer with Electropolished Wet and Dry Tumblers

The MBS-K30 also features a built-in LCD display that will constantly display the current CO2 level (ppm)

Air Bear 16x25x5 (4 7/8) Air Filter Replacement MERV 13 Plus Carbon 2 Pack air-purification process pH glass electrode (platinumImportant 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 3 8 and 5 1 4 inch depth filters,