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Make premium water only soil
for a fraction of the price buying it.

Name: KiS Organics Large Nutrient Pack
Brand: KiS Organics
SKU: KIS-NUTRIENT-LG
Price: 144.95 USD
Availability: InStock

The KiS Nutrient Pack is the nutrient and mineral concentrate inside every bag of KiS Water Only and Biochar Soil. Sold separately so growers who can source peat, pumice, and compost locally don't pay to ship those heavy, bulky ingredients across the country. The Large bag (42 lbs) makes 12 cubic feet - that's 100 gallons - of fully loaded water-only living soil.

Three uses: build new living soil from scratch, re-amend existing soil between cycles, or top-dress a deficient plant mid-grow. No manures, no guano, no synthetic chemicals, no fillers. CDFA registered, OMRI listed, WSDA approved, and heavy metal tested.

CDFA Registered Organic OMRI Listed WSDA Approved Heavy Metal Tested

Free shipping on orders over $49

30-day returns on all orders

Serving growers since 2006

Three ways to use it

Build, re-amend, or rescue

Use 1 - Build new water-only soil from scratch

For: Growers starting fresh who want the KiS formula without paying to ship pre-made soil across the country.
What you source locally: Sphagnum peat moss (~50%), aeration like pumice or perlite (~33%), and high-quality compost or earthworm castings (~17%). The Nutrient Pack provides all the nutrition, minerals, and microbiology - you supply the structure.
Large bag covers: 12 cu ft (100 gallons) of finished soil.

Use 2 - Re-amend living soil between cycles

For: Reloading nutrition in existing KiS soil or any living soil between grow cycles.

Rate: 1 cup per 10 gal of soil + 3-4 gal quality compost per yard. Mix in, water to field capacity, rest 7-14 days.
Large bag covers: 3 yards (81 cu ft) of existing soil.

Use 3 - Top-dress a deficient or depleted soil

For: Correcting deficiency or adding fertility to a depleted mix mid-grow.

Rate: 1 cup per 10 gal for containers; ½ cup per sq ft for beds. Scratch lightly into the surface and water in.
Tip: Mixing in (vs. surface-only) gets nutrients to the root zone faster.

What the Large bag (42 lbs) gets you

100 gal

Finished water-only soil from one Large bag when building from scratch

3 yards

Of existing soil re-amended and reloaded for another full grow cycle

~$8

Cost in Nutrient Pack to re-amend a single 10-gallon pot for the next cycle

Free Shipping*

Ships from our Buffalo, NY warehouse. Small additional fee may apply for some western states.

What's in it

The nutrient and mineral profile - ingredient by ingredient

KiS Microbe Catalyst + Mycorrhizae + Beneficial Microbes Lab-tested biology

The Microbe Catalyst has been in KiS's compost tea program for over a decade - it directly feeds and amplifies microbial activity. Mycorrhizae extends the root zone's reach for water and nutrients. Together these are what turn a blend of dry amendments into a living, cycling soil rather than a slow-release fertilizer.

Nitrogen from four organic sources - fast, medium, and slow release

Alfalfa meal (fast, plus triacontanol growth hormone), fish meal (fast), fish bone meal (medium, also high phosphorus), and crustacean meal (slow, plus chitin for pest suppression). The spread across release rates prevents the nitrogen from peaking and crashing over the cycle.

Rock dust + basalt - re-mineralisation for depleted or recycled soil Trace mineral spectrum

Glacial rock dust and basalt are the trace mineral backbone of the formula. Finely ground rocks decompose slowly over years, providing a long-term reservoir of 70+ trace elements. Particularly valuable for recycled soil that has had its mineral content drawn down by previous crops.

pH buffering stack - oyster shell, calcite, gypsum, soft rock phosphate

Four minerals that together provide calcium, phosphorus, and sulfur while self-regulating pH - similar to the buffering mechanism in the pre-made KiS soils. The combination keeps nutrients plant-available across the grow without active pH management.

Neem cake + karanja cake - pest suppression built into the soil No spray needed

Neem and karanja cakes are the pressed residue left after oil extraction. Both contain compounds that kill fungal pathogens and certain soil-dwelling pests systemically - studies have shown synergistic effects when used together on aphids and mites. They act as a passive IPM layer in the root zone from day one.

No manures, no guano, no fillers - and no need to flush

Because all nutrients are organically bound (not ionic salts), there's no salt buildup and no flush protocol. Tap water, well water, or RO water all work. This is the same reason KiS soils don't require pH adjustment - the mineral buffering, not salt avoidance, is doing the pH work.

Specs

Numbers and details

Large Bag Weight

42 lbs

Soil Build Coverage

12 cu ft (100 gallons)

Re-amend Coverage

3 yards of soil

Top-Dress Rate (Containers)

1 cup per 10 gallons of soil

Top-Dress Rate (Beds)

½ cup per sq ft outdoors

Cook Time (New Soil)

7–14 days to ambient temp

Certifications

CDFA · OMRI · WSDA

Shipping

Free* - ships from Buffalo, NY

Full Ingredient Disclosure

KiS Organics Microbe Catalyst, Organic Alfalfa Meal, Organic Fish Bone Meal, Organic Crustacean Meal, Organic Kelp Meal, Organic Fish Meal, Glacial Rock Dust, Basalt, Soft Rock Phosphate, Oyster Shell Flour, Neem Cake, Karanja Cake, Gypsum, Natural Calcite, Mycorrhiza, and Beneficial Microbes.

Building water-only soil from scratch - the KiS recipe

1

Gather your base ingredients

Source locally: ~50% sphagnum peat moss, ~33% aeration (pumice preferred; perlite works), ~17% high-quality compost or earthworm castings. The Large Nutrient Pack makes 12 cu ft - scale your base accordingly. Mixing on a tarp, slab, or in a kiddie pool makes this much easier.

2

Mix dry ingredients first

Combine peat, aeration, and Nutrient Pack dry before adding compost. Spread the Nutrient Pack evenly - use a watering can to dampen slightly and reduce dust, but don't add much water yet. Break up any clumps. Add compost last and mix thoroughly.

3

Water to field capacity

Add water gradually and mix as you go. You've reached field capacity when a squeezed handful releases only a drop or two. Target 80–120 mbar on a Blumat meter. Don't over-saturate - anaerobic conditions kill the biology you're building. Pile the soil tall to speed up the cook.

4

Cook for 7–14 days, then plant

Turn the soil every other day to redistribute moisture and add oxygen. Soil temperature will rise (don't let it exceed 160°F / 71°C or you risk killing beneficial organisms). It's ready when it cools to ambient temperature and holds steady. Plant into a seed-starting pocket, not directly into the mix.

In the bag

Large bag contents - and which size fits your setup

Large bag includes

42 lbs of concentrated nutrient + mineral blend
Full N-P-K spectrum across fast, medium, and slow-release sources
Complete trace mineral stack - glacial rock dust, basalt, kelp
pH buffering minerals - oyster shell, calcite, gypsum, soft rock phosphate
Neem + karanja cake for passive pest and pathogen suppression
Microbe Catalyst, mycorrhizae, and beneficial microbes

Size comparison

Small (3.2 lbs) - makes 10 gal of soil, re-amends ~¼ yard
Regular (14 lbs) - makes 30 gal of soil, re-amends 1 yard
Large (42 lbs) - makes 100 gal of soil, re-amends 3 yards
Note: You'll also need: sphagnum peat, pumice or perlite, and quality compost or worm castings - source these locally

Not sure which size? Call or email - we'll help you calculate based on your setup. 716-217-0353 / help@happyhydro.com

Questions

Frequently asked questions

Why would I buy this instead of a pre-made KiS soil bag?

Shipping weight. A 1.5 cu ft bag of KiS Water Only Soil weighs 42 lbs and makes enough for one 10-gallon pot. The same 42 lbs of Nutrient Pack makes 100 gallons of finished soil - because peat, pumice, and compost (which make up roughly 80% of a pre-made soil by volume) are bulky and cheap to source locally. If you can find sphagnum peat, perlite or pumice, and quality compost within driving distance, the Nutrient Pack is the dramatically more economical path.

What exactly do I need to source locally to build the soil?

Three things: sphagnum peat moss (~50% of final soil volume), an aeration amendment like pumice or perlite (~33%), and high-quality compost or earthworm castings (~17%). The compost is the most important sourcing decision - it must be biologically active to seed the soil food web. Cheap bagged compost from a big box store often isn't. Look for compost with visible fungal threads or a rich earthy smell, or use quality worm castings. KiS recommends their Lane Ocean Rich Compost or SeaCoast Compost if you want a reliable option.

Do I really need to let it cook for 7–14 days? What happens if I plant too early?

Yes - and planting too early is the most common mistake with this product. When you first mix the amendments, the microbial population explodes as it starts consuming the organic nutrients. Soil temps rise, nitrogen spikes, and the mix is genuinely too hot for seedlings. The 7–14 day cook period lets the biology stabilize, temperatures drop back to ambient, and available nitrogen moderate. If you test the temperature and it's still elevated after 14 days, wait. Don't exceed 160°F/71°C during the process or you'll damage the biology you're building.

Can I use this to re-amend my existing KiS Water Only or Biochar soil?

Yes - this is the intended re-amendment product for both KiS soils. After harvest, remove or chop-and-drop the root ball, then apply 1 cup of Nutrient Pack per 10 gallons of soil plus 3-4 gallons of quality compost per yard. Mix in, water to field capacity, and wait 7-14 days before replanting. Cost is typically around $8 per 10-gallon pot. The biochar in the Biochar Mix doesn't need replacing - it's permanent and improves each cycle.

Do I need to adjust pH or use filtered water?

Not in most cases. The mineral buffering stack handles pH without active management. Tap water, well water, and RO water all work. If your water is above pH 7.4, bring it down slightly. RO water works best when you add a small amount of your tap water back in for buffering. Removing chlorine with a charcoal filter is best practice, but there's enough organic matter in the soil that it's not a hard requirement.

What if I receive a damaged bag or the product isn't right for my setup?

Email a photo of any damage to help@happyhydro.com and we'll make it right - replacement or refund, your call. Change-of-mind returns accepted within 30 days on items in new condition. Not sure this is right before ordering? Call us at 716-217-0353.

Why buy KiS Organics Nutrient Pack from Happy Hydro?

Happy Hydro has been selling growing equipment and amendments since 2006. We carry KiS because the formulas are tested and documented - Tad Hussey spent two years trialing this at a local horticulture college before bringing it to market. Call 716-217-0353 or email help@happyhydro.com.

Why Buy From Happy Hydro

Happy Hydro began as a pipe dream in a garage and has grown into something built almost entirely on word of mouth and repeat customers. Rather than focusing on raising margins and obsessing over profits, we've always believed that the right combination of competitive prices, superior products, and world-class customer service speaks for itself. Our philosophy will never change: when you're happy, we're happy.

Our commitment

What you can expect from Happy Hydro

Real People, Real Growers

Our grower support team isn't a call center. They know the products because they're passionate about growing. Reach us Monday-Friday, 10 am-4 pm EST at 716-217-0353 or help@happyhydro.com, before you order or after.

Hand-Picked by Growers, for Growers

Every brand we carry was chosen by our founders because it performs. We only stock premium brands we believe in, and every item is inspected before it leaves our warehouse.

Fair Prices and Free Shipping

We work hard to keep our prices as low as manufacturers allow, and we include free shipping on orders over $49 so there are no surprises at checkout. Find a lower price anywhere and we'll match it.

Authorized for Every Brand We Carry

We're an authorized dealer for every manufacturer on our site. That means you get the full manufacturer's warranty on every purchase. No grey market, no expired stock.

30-Day Returns on Most Orders

Hard to commit to a product you haven't tried. Return most items within 30 days in original condition and we'll take care of it. Read the full policy.

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Volume and Commercial Pricing

If you're a commercial grower or putting together a large order, reach out before you buy. We have pricing available that we can't advertise publicly. Call 716-217-0353 or email help@happyhydro.com and we'll take care of you.

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KiS Organics Large Nutrient Pack

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