20x25x2 Pleated MERV 13 Air Filters 3 Pack lighting-&-electrical-components You can also use Grow

You can also use Grow Big as a foliar feeding

The Stage 3 has a recycling timer which controls 1 of the 4 outputs

It powers the lamp inclusion of your choice

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20x25x2 Pleated MERV 13 Air Filters 3 Pack lighting-&-electrical-components You can also use GrowNordic Pure MERV 13 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200