8.75 x 18 x 0.75 Exact Size Air Filter nutrients SILICIC ACID @ 4 –

SILICIC ACID @ 4 – 8 ML PER GAL

Calcium for the base of every feed

Do not apply in the heat of the day or in windy conditions

Conductivity and temperature do not need to be calibrated as this is locked in during manufacture

Compatible with all 6" rockwool cubes

8.75 x 18 x 0.75 Exact Size Air Filter nutrients SILICIC ACID @ 4 –Nordic Pure Custom MERV 10 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition