Athena and Bloom
Athena on the left, Bloom on the right, matched on the job each bottle does. Their base, cleaners and IPM stay put. Here’s what Bloom adds to a mineral program.
Last checked 5 November 2026 · Public information only
This Fit Report is a summary of publicly available information about Athena and its products, taken from their own website, labels and published material as of 5 November 2026. We’ve linked each source so you can check it yourself. Rates are as printed on each company’s own pages; we don’t show prices. It isn’t affiliated with, endorsed by or approved by Athena, and product names belong to their owners. Products, rates and claims change, so please confirm current details with the manufacturer before making any decision. Spotted something out of date? Email nathan@bloomyellowbottles.com and we’ll correct it.
A clean mineral program, with room for the tonics.
Athena’s fertiliser lines are mineral: Blended liquids, Pro powders, CaMg and PK, plus Stack, a kelp extract. Their list has no fish, humic, carbohydrate or sea-mineral input, and no bottle per stage. Seafuel, Humate, SWTNR and Sea Minerals go in the same tank at small weekly rates.
- Stays as is: Grow and Bloom A and B, the Pro Line, the Clean Line and the Tissue Culture Kit.
- Both have one: cal-mag, PK, kelp, a finish, silicate, IPM and a rooting product.
- Not on their list: fish, humic, carbs, sea minerals and stage additives.
Athena and Bloom in short
Blended or Pro base, the Clean Line and the Tissue Culture Kit.
CaMg, PK, Stack, Fade, Balance, IPM and Cuts each sit near a Bloom product.
Seafuel, Humate, SWTNR, Sea Minerals and the Pre, Ultra, Phat and Ooze stage additives.
Why each one fits
What the Bloom product does, the research behind that kind of input, and where it sits in a program that already runs.
Fish and humic next to Stack
What it does. Seafuel is tuna and kelp at 1 ml/L weekly, clone through late flower. Humate is 10% humic acid at 2.5 ml/L weekly, seedling through flush.
A major review links humic substances to more lateral roots and to root changes tied to nutrient uptake. Work on protein hydrolysates, which fish inputs belong to, links them to nutrient uptake, mostly under stress. None of it tests these bottles or cannabis.
Canellas et al. (2015), Scientia Horticulturae (review) · Malécange et al. (2023), Int J Mol Sci (review)
How it stacks. Stack’s page says add it last to the reservoir and it’s safe in irrigation. Our read: treat Bloom’s organic inputs the same way, after the base and CaMg, and watch EC.
Carbs and sea minerals
What it does. SWTNR is carbohydrates and potassium at 1 ml/L weekly, veg week 2 to the flush. Sea Minerals is trace minerals from sea water at 0.13 ml/L weekly, veg to bloom.
How it stacks. Athena’s two-part bases carry chelated micros per their pages, so Sea Minerals adds to them rather than standing in for them (our read). Both are small doses on top of the base.
One bottle per stage
What it does. Pre in mid veg, Ultra at the flip (flower weeks 1–2), Phat in flower weeks 3 and 4, Ooze from week 5 right through the final flush. These are timing tools, so there’s no study cited for them here.
How it stacks. Athena’s program splits into veg and flower, with PK from week 3 and Fade at the end. These go into those same weeks without touching the base plan (our read: check runoff when you add anything).
Stack early, Seaweed all the way
What it does. Seaweed is southern bull kelp at 1 ml/L weekly, seedling through the flush.
A 2021 review of seaweed extracts reports effects on growth, yield and tolerance of drought, salt and cold across many crops. It covers kelp as a group, not either product.
How it stacks. Stack’s page stops it at flower week 3. Seaweed can run either side of that window, or a grower can test the two in the weeks they share (our read).
Where the programs complement each other
Fish, humic, carbs and sea minerals in the tank
Athena’s list has no fish, humic, carbohydrate or sea-mineral input. Seafuel, Humate, SWTNR and Sea Minerals go in at 0.13–2.5 ml/L weekly over Blended or Pro.
Stage bottles over their veg and flower split
Athena runs a veg base, a flower base, PK from week 3 and Fade at the end. Pre, Ultra, Phat and Ooze add one job per stage on top, at 1–2.5 ml/L weekly.
Cuts at the cut, Roots after it
Cuts is a gel applied to the stem. Roots works as a 1 ml/L dip or at 0.5 ml/L weekly in the feed, so a grower could run them in sequence or test one against the other (our read).
Their line, Bloom’s fit at a glance
Matched on job, not NPK. Athena prints rates per US gallon, Bloom per litre on a weekly feed chart. Tap a tag to filter.
Keep your base. Bloom’s additives sit on top of either Athena line.
The Pro Line stays. Bloom’s liquids go in alongside it.
Cleanse also runs as a final flush per its page. Bloom has no cleaning products.
Genetic storage is its own job. Nothing in Bloom’s range does it.
Same job. Athena’s says hydro use, with inert media and RO water. Pick one.
Same job. Athena’s starts at week 3; Bloom’s is an as-needed bottle. Plan one source.
Stack is a spray at 7 ml/gal or a drench at 1–2 ml/gal. Seaweed runs through to the flush.
Same window. Fade is a base, Final is an additive. Plan the stack.
Athena’s page says no other silicate is needed with Balance. Run one.
Both target soft-bodied pests. IPM also lists powdery mildew.
Both work at the cut. Roots can carry on in the weekly feed.
Tuna and kelp, and 10% humic acid, through the cycle.
Carbs and potassium from veg week 2, and trace minerals from sea water.
Mid veg, flower weeks 1–2, weeks 3 and 4, then week 5 through the flush.
Put it side by side
Where both ranges have a product for the same job, the fair answer is a test in your own room. Here’s what to watch and how to keep it fair.
Keeping it fair
- Same plants. Clones off the same mother, same cultivar, same age.
- Same room. Same light, climate, media, pot size and watering.
- Same base. Keep the base feed and EC the same on both sides.
- One change. Change only the product being tested, and write down what you see each week.
Where each bottle sits in the cycle
Athena’s timing in grey, Bloom’s in yellow, across shared stages of the grow.
| Stage | Root | Veg | Flip | 3–4 | 5+ | Last 2 | Flush |
|---|---|---|---|---|---|---|---|
| Athena, per their pages | |||||||
| Grow A and B (Athena) | |||||||
| Bloom A and B (Athena) | |||||||
| CaMg (Athena), as needed | |||||||
| PK (Athena) | |||||||
| Stack (once weekly) | |||||||
| Fade | |||||||
| Cleanse | |||||||
| IPM | |||||||
| Bloom, per Bloom’s weekly feed charts | |||||||
| Roots | |||||||
| Pre | |||||||
| Ultra | |||||||
| Phat (weeks 3 and 4) | |||||||
| Ooze (wk 5 to flush) | |||||||
| Final (with Ooze) | |||||||
| Seafuel | |||||||
| Seaweed · Humate · Sea Minerals | |||||||
| SWTNR | |||||||
| Cal-Mag | |||||||
| Groigen (foliar, as needed) | |||||||
| Florigen (foliar, as needed) | |||||||
| PK (as needed) | |||||||
| Silica | |||||||
Timing comes from Athena’s product pages. Grow A and B are for veg, Bloom A and B for flower; Fade takes the final two weeks in place of Core, so Bloom A and B is pale there (our read). CaMg is all stages as needed and IPM can be used seedling to harvest, so both are pale. Stack runs from the final veg week to flower week 3. Cleanse is regular use at low rates and a final flush. Bloom’s bars follow its weekly feed charts; pale Bloom bars are tapers or as-needed bottles.
Already covered
- Base feed. Blended Grow and Bloom A and B, or the Pro Line powders.
- Cal-mag and PK. CaMg (Athena) and PK (Athena).
- Kelp and finish. Stack, and Fade for the final two weeks.
- pH, cleaning and IPM. Balance, Pro Balance, the Clean Line and IPM.
Stays exactly as is
- Blended or Pro base. Bloom’s additives go in around it.
- Cleanse, Renew, Reset and Perafoam. Bloom has no cleaning products.
- Tissue Culture Kit. Nothing in Bloom’s range does this job.
- CaMg, PK, Stack and Fade. If they’re working in your room, keep them, or test Bloom’s next to them.
Background, science and sources
Who Athena are
Athena says it was born in the grow rooms of Los Angeles, California. It serves hobby and craft growers through to large professional cultivators.
The Blended Line is liquids for simpler irrigation or hand watering, and the Pro Line is powders for advanced fertigation. Alongside sit IPM, Foliar (Stack), Clean, Culture and propagation lines. They sell through their online store, authorised dealers and international distributors, with bulk pricing for commercial facilities.
Sources: Home · Fertilization · Blended Line · Pro Line
What each company brings
Athena: Liquid and powder bases, CaMg, PK, a kelp extract, Fade for the finish, pH buffers, line cleaners and sanitisers, a 25(b) IPM spray, a rooting gel and a tissue culture kit.
Bloom: one additive for each stage of the crop, seaweed, humic and sea mineral inputs, foliar sprays, and weekly feed charts for soil, coco and hydro. Rates and timing are on every product page.
Cropping Solutions, the other brand under Agricultural Organics, isn’t part of this report.
Dose basis: how each side counts
Athena prints rates in ml per US gallon: Bloom A at 2–15 ml/gal, CaMg at 2–10 ml/gal all stages as needed, Cleanse at 2–5 ml/gal for regular use, and Stack at 1–2 ml/gal as a weekly drench. At 3.785 L to the gallon, CaMg is about 0.5–2.6 ml/L and Stack about 0.26–0.53 ml/L.
Bloom prints ml per litre on a weekly feed chart. Athena’s pages point to their feed schedules for week-by-week rates, so the same number on each side isn’t the same weekly amount.
Mix calculator
Rates as printed on each company’s page (1 US gallon is 3.785 L). Bloom’s rates are per litre of nutrient solution, dosed weekly per its feed charts. Pick a product and your tank size.
Potassium in flowerWell supported
Hasanuzzaman and colleagues (2018) review potassium’s roles in plants: enzyme activation, stomatal control, photosynthesis, and tolerance to drought, salinity and heat.
Why it matters here: PK (Athena) and Bloom PK both lean on potassium in flower. The review is general plant science and doesn’t compare products or timing.
Sources, all viewed 5 November 2026
Athena: Home · Fertilization · Blended Line · Pro Line · CaMg (Athena) · PK (Athena) · Stack · Cleanse · Balance · Bloom A (Athena) · Grow A (Athena) · IPM · Cuts · Fade · Water conditioners · IPM Line · Clean Line · Culture Line · Labels and SDS · CaMg label (PDF)
Bloom: Roots · Pre · Ultra · Phat · Ooze · Final · Seafuel · Seaweed · SWTNR · Humate · Cal-Mag · Groigen · Florigen · Sea Minerals · PK · Euro · Grow · Flower · Silica · OrganiShield
Last checked 5 November 2026. Public information only. Not affiliated with, endorsed by or approved by Athena; product names belong to their owners. Please confirm current details with the manufacturer. Corrections: nathan@bloomyellowbottles.com. All Fit Reports