17x28x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack bloom nutrients 5mm spherical tip is for

5mm spherical tip is for use in moderately aggressive liquids

The ballasat has 99% power factor rating making it highly efficient and it also has open/short circuit protection

The new Elite stand-up trimmer is built to last

Added phosphorus will also aid with photosynthesis and the plant’s ability to uptake nutrients

--Comes with 8 nozzles which is recommended up to 200 sqft of coverage area

17x28x1 Exact MERV 8 Plus Carbon AC Furnace Filters 6 Pack bloom nutrients 5mm spherical tip is forNordic Pure Custom MERV 8 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