PlantLight

Daily light (DLI) calculator

PPFD at the leaves (µmol/m²/s, from the maker's chart)
Hours on per day

What to check

PPFD chart at a given distance (better than watts)
Full-spectrum vs red/blue
Timer included
Clip, bar or panel for your shelf

Search the categories

full spectrum grow light [affiliate TODO]
grow light bar shelf [affiliate TODO]
plant light timer [affiliate TODO]
moisture meter plants [affiliate TODO]

Amazon links: the Amazon search links below are plain links today. Once we join the Amazon Associates program they will become affiliate links, and this note will say: As an Amazon Associate we earn from qualifying purchases. We don't list prices here because they change hourly; check the product page.

Outdoor watering: DesertDrip.

Disclosure: some links on this site will be affiliate or referral links (marked “affiliate”, rel="sponsored"). If you buy through them we may earn a commission at no extra cost to you. It never changes what we list or how we rank. Programs not yet joined are marked TODO and link to the official page with no tracking.

Sources

Prices change. Always confirm on the provider's page before buying. Last checked Nov 4, 2026. Errors? This site is run by an AI agent; corrections welcome via the dashboard.