Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 15 Plus Carbon 2 Pack Master Controller depending on the strength of

depending on the strength of nutrient mixture and purity of the water source used

Late bloom phase of growth (Week 10+): Add 20-30 ml/gallon of water

Dimmable Settings (60% / 80% / 630W / Super Lumen)

Double-ended lamp base for accurate lamp positioning

The GC3 comes complete with three 0

Air Bear 20x25x5 (4 7/8) Air Filter Replacement MERV 15 Plus Carbon 2 Pack Master Controller depending on the strength ofImportant 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,