If you’ve watched leaves yellow without knowing why, or followed forum advice and still harvested airy, light buds, this is the fix: the exact feed, climate targets and checks for every week of your grow, from the program Athena® runs in commercial grow rooms. The feed chart is built for Athena nutrients. Everything else works with any brand. It’s free, and it lands in your inbox right away.
A grow takes 19 weeks from seed through cure. One bad week of feeding or climate can cost you the whole harvest.
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What’s inside:
Both editions, metric and imperial, are on their way. Start with the feed chart on p37. It should hit your inbox in seconds. Don’t see it? Check spam, or email [email protected].
New to growing? Start on page one and follow along. Got a few harvests in? Go straight to the feed chart and the week-by-week pages.
Avoiding all four takes zero new gear. The handbook gives you a number to aim for and a simple routine for checking it.
Nute burn. Lockout. Yellow leaves you can’t diagnose. Pouring until it drains tells you when to stop, not how strong the mix should be. Too weak and the plant goes hungry. Too strong and it can’t take up food at all.
Nutrients have to go into the water in a set order. Get it wrong and some of them fall out of the mix, so your plants never get them, even though the water looks fine.
A tent heats up and cools down fast, and the biggest swing usually hits when the lights go off. VPD is the balance of heat and humidity that keeps a plant drinking. Without a target for it, you’re guessing.
Bugs, mildew, pH drift and light leaks are all easy to deal with when you spot them early. They get missed when nobody checks on a schedule.
Athena® was born in the grow rooms of Los Angeles. Our Facility Advisors are former cultivation directors, head growers and irrigation specialists who’ve run facilities from 40,000 to 1,000,000+ sq ft. Your tent is a lot smaller. The weekly discipline is the same.
Grown with Athena by brands including
Results from Athena case studies with licensed facilities running the program.
Culta
23.72% → 30.22%THC, with yield up from 47 to 56 g per sq ft, as reported by the facility.
Highlife Farms
59 → 99 gPer plant, with cost per mixed gallon down 40%, as reported by the facility.
Mother Earth Wellness
40 → 69 gPer sq ft, a 73% gain, as reported by the facility.
Grower-reported results from commercial facilities with their own genetics, rooms and methods. Your results will vary, and these numbers aren’t a promise.
Your determination to cultivate a plant long scrutinized and outlawed for generations… has brought you this book.
Page one, Homegrower Handbook
You’ll always know what comes next. Each stage has its own pages with the targets and to-dos, and the book walks you through them in this order.
← Swipe to see the full cycle
Seed or clone, and what each choice means for your grow.
LED or HPS, and how much light your plants need.
Temperature, humidity and airflow targets for every stage.
The daily checklist, notes for each stage and upkeep.
What each nutrient does, plus the full feed schedule.
Real pages from the handbook. The VPD chart (p25), the stage contents (p7), the feed chart (p37), a week page (p51) and the checklist (p31).
Each week tells you how much of each product to add to your water, in the order you add it. EC is how strong the mix is and pH is how acidic it is, and the chart gives you a target for both. Here are the four veg weeks, straight from page 37.
| Mix order | Veg W1 | Veg W2 | Veg W3 | Veg W4 |
|---|---|---|---|---|
| 1Grow B | 29 | 29 | 29 | 29 |
| 2Grow A | 29 | 29 | 29 | 29 |
| 3Bloom B | 0 | 0 | 13 | 26 |
| 4Bloom A | 0 | 0 | 13 | 26 |
| 5CaMg | 8-13 | 8-13 | 8-13 | 8-13 |
| Target EC | 2.1 | 2.1 | 2.1 | 2.1 |
| Target pH | 5.8-6.2 coco & rockwool · 6.0-6.4 peat | |||
Swipe the table to see all four weeks
Excerpt from page 37 of the metric edition. Athena publishes this as a baseline recommendation; adjustments are at the grower’s discretion and vary by strain and run length.
13 daily checks and 6 weekly ones, straight from page 31. Print it and tape it inside your tent.
Most of these take a few seconds. Do them every day and you’ll spot a pH swing or a light leak before it hurts your plants.
Once a week you write a few numbers down, so you can see whether anything is changing.
“Absolutely the best nutrients on the market, the cleanest, the easiest if you do what they say to do when mixing you will not have one yellow leaf, and your plants will be super healthy”
Keith A. · Verified Amazon purchase · June 2026“Pretty simple to use. They have feeding charts online and grow experts on their website who respond to any question promptly.”
Sally C. · Verified Amazon purchase · August 2026“When it comes to bottled nutrients, this is the best. I’ve used em all over the last 20 years and athena is by far the easiest and cleanest to use.”
Chelsy E. · Verified Amazon purchase · December 2025All 19 weeks, the full feed chart and the daily checklist, in one free PDF. Both editions hit your inbox within seconds.
