White paper 06 · Veg stack · Grower proof series
Roots, Ultra,
Sea Minerals
The three products growers keep naming together in the first half of a run. Here’s what they reported, and what we still can’t tell you.
Reading time ~4 minutes · Label figures transcribed from the product labels · Sources listed at the end · October 2026
The stack
Strike to stretch
ROOTS early on, from cuttings through veg. SEA MINERALS alongside it through veg. ULTRA in weeks 1–2 of flower, through the stretch.
What makes this a program rather than three products is that growers keep naming them together, unprompted, in the same message.
20+ / 6 / 9
Growers on record: Roots / Ultra / Sea Minerals · counted 30 Oct 2026
4
Growers naming two or more of the three together · in a single message
Wks 1–2
Ultra timing · of flower, through the stretch
What’s actually different
Three things worth knowing
One house, built to stack
Three products from one house, made to run together rather than assembled from whatever was on the shelf.
It sits over the base
No grower in the record swapped their base nutrient to run this stack.
Wide crop range
The same products turn up on cannabis, peppers and herbs. See the food crops paper.
Worth knowing. Growers keep pairing these three without being told to, which is why we wrote it up. Most of what’s here is description, not measurement. One grower did compare plants with and without Roots in the same room; his words are below.
What growers are reporting
In their own words
Quotes come from Bloom’s grower review records. Some are lightly trimmed for length and spelling, with the meaning unchanged; the original messages are on file. Growers in the trial program agreed to their feedback being shared.
“The roots definitely helped. The three plants I used them on are roughly 6–10 inches taller than the ones I didn’t. Same PPFD, EC and water times; the only difference was the Bloom.”
@apollos_oasis
Roots · 10 Feb 2026
“I love the smell of Roots, it’s my go-to. I double down on clones and they’re typically rooted in 4–7 days.”
@deogrow
Roots · 28 Jun 2025
“Roots and Sea Minerals have been key to getting my plants this happy: zero signs of shock or setback.”
@squidward_organics
Roots · Sea Minerals · 8 Sep 2025
“Ultra has really taken over and made a big difference in such a short time frame.”
@therealbestbudz
Ultra · 31 Aug 2025
“Everything was happy and lush on Roots, Sea Minerals, SWTNR and Ultra through stretch.”
@squidward_organics
Roots · Sea Minerals · SWTNR · Ultra · 24 Nov 2025
“Ultra really made me a believer this round: bud sites were prominent early on.”
@stillstanding_10
Ultra · Phat · 1 Mar 2026
“I’ll tell you this much, the Roots and Sea Minerals are AMAZING.”
@jason_capsaicin_
Roots · Sea Minerals · 22 Sep 2025
The numbers
What’s on the label
Guaranteed analysis is the figure printed on the product label, not a marketing claim. Rates are Bloom’s standard schedule.
ROOTS
Guaranteed analysis 0.0083-0-0.43
Total Nitrogen (N)
0.0083% (0.0021% ammoniacal, 0.0062% water-soluble organic)
Soluble Potash (K₂O)
0.43%
Derived from
Durvillaea potatorum (seaplant extract)
Also contains (non plant food)
0.075% humic acid (from leonardite), 0.054% thiamine hydrochloride (vitamin B1)
Rate
0.5 ml per litre in feed; 1 ml per litre as a dip for cuttings and plugs
ULTRA
Guaranteed analysis 0.0331-0-0.2289
Total Nitrogen (N)
0.0331% (0.0008% nitrate, 0.0005% ammoniacal, 0.0318% water-soluble organic)
Soluble Potash (K₂O)
0.2289%
Derived from
Ascophyllum nodosum, Medicago sativa (alfalfa extract)
Also contains (non plant food)
0.075% humic acid (from leonardite), 0.054% thiamine hydrochloride (vitamin B1)
Rate
1 ml per litre every feed, weeks 1–2 of flower
SEA MINERALS
Made from sea water
Rate
1 ml per 8 litres of nutrient solution (about 0.13 ml per litre)
What we can stand behind
Sourced, or it isn’t here
20+ growers on ROOTS, 6 on ULTRA, 9 on SEA MINERALS.
Source: Bloom grower review records, counted 30 Oct 2026
4 growers name two or more of the three in a single message.
Source: Bloom grower review records, cross-referenced 30 Oct 2026
All three are additives over an existing base feed.
Source: Bloom product range
Three products, one conversation
The veg stack is the easiest way to try more than one Bloom bottle at once. Reviews are public and growing.
See every grower review →Talk to Nate directly: nathan@bloomyellowbottles.com · (970) 556-1678 · bloomyellowbottles.us · @bloomyellowbottles · @bloom_crew_nate
Sources
- Bloom grower review records, counted 30 Oct 2026 — 20+ growers on ROOTS, 6 on ULTRA, 9 on SEA MINERALS.
- Bloom grower review records, cross-referenced 30 Oct 2026 — 4 growers name two or more of the three in a single message.
- Bloom product range — All three are additives over an existing base feed.
- Bloom product labels — Agricultural Organics (Aust) P/L, Green Fields, South Australia