Name: KIS Organics Original Water Only Soil Mix
Brand: KiS Organics
SKU: KIS-WATERONLY-1.5CF
Price: 62.44 USD
Availability: InStock
Rating: 5.0 (3 reviews)

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KIS Organics Original Water Only Soil Mix in a white, branded plastic bag featuring a tomato plant illustration.

A white bag of KIS Organics Water Only Soil Mix featuring a tomato plant illustration, sitting between two fabric pots.

Laboratory soil test report for KIS Organics Original Water Only Soil Mix showing low heavy metal content levels.

A truly water only-only soil from seed to harvest.
Use a 7-10g pot and just add water.

KiS Organics Water Only Soil is a fully pre-loaded living soil: 22 organic ingredients, an active microbial ecosystem, and enough buffered nutrition to carry most plants from seedling to harvest on plain water alone. No feeding schedule, no pH adjusting, no mid-cycle deficiency chasing. The biology in the soil handles nutrient cycling - your only input is water.

Registered as Fertilizer Heavy Metal Tested & Verified

2015 Dope Cup - Best Hybrid Flower. Won by a commercial WA grower running KiS Water Only Soil with no supplemental bottled nutrients. KiS is registered as a fertilizer product - held to the same regulatory standard as a nutrient product, not just labeled as a soil amendment.

Free shipping on orders over $49

30-day returns on all orders

Serving growers since 2006

Why switch

Your current grow vs. water-only organic

Bottled Nutrients + Cheap Soil

Measure, mix, and pH-adjust every feeding
Nutrient lockout and deficiencies when ratios are off
Dump and replace media every single cycle
Ongoing bottle cost: $50–$200+ per grow
Flat terpene expression common with synthetic inputs
No living biology - sterile media needs constant feeding

KiS Organics Water Only Soil

Water only - soil biology releases nutrients as the plant demands them
Naturally pH-buffered - mineral blend prevents lockout
Reusable for years - re-amend a 10-gal pot for under $8 per cycle
One 1.5 cu ft bag covers a full grow cycle in a 10-gal pot
Broader organic inputs support full terpene biosynthesis
Microbes, mycorrhizae, and compost - living from day one

The real economics of water-only growing

~$8

~$8 per 10-gal pot per cycle in KiS Nutrient Pack

75%

Most growers significantly reduce or eliminate their bottled nutrient budget when switching to living soil

5+ yrs

How long KiS has tested and re-amended the same soil in active production

1 bag

Covers a 10-gallon container - nutrients, biology, and structure all included

What makes it work

Built on biology, not bottles

Water only - seedling to harvest No bottles needed

The soil contains enough pre-loaded organic nutrition to carry most plants through a complete grow cycle with no added fertilizer. KiS designed it, lab-tested it, and registered it as a fertilizer product - held to a higher regulatory standard than a standard potting mix.

Lab- and microscope-verified microbial community

KiS tests every batch of compost and peat for biological activity before it goes into the mix, then inoculates the finished soil with additional microorganisms and Microbe Catalyst. The microbes convert bound organic nutrients into plant-available forms on demand - which is why no external feeding schedule is needed.

Reusable - re-amend a 10-gal pot for under $8 per cycle 5+ yrs tested

After harvest, top-dress with KiS Nutrient Pack (Small, 3.2 lbs covers ~1 cu ft) plus a cup of worm castings, water in, and wait 7–14 days. KiS has run the same indoor beds for over five years without replacing the base soil. The biology improves each cycle as the microbial community matures.

Self-buffering pH - oyster shell, calcite, basalt, ag lime

The mineral stack keeps the soil pH stable without intervention. These slow-dissolving carbonates and silicates buffer against both acidification (from organic breakdown) and alkalinity creep. Most growers water straight from the tap with no pH adjustment and see no issues.

Independent heavy metal testing - Brookside Labs & Delta Labs

Heavy metals are the real concern with organic amendments (fish meal, bone meal, crustacean meal all carry risk). KiS has the soil independently tested by two separate labs and publishes the results. The unique mineral pH manipulation keeps any trace metals relatively unavailable for plant uptake. Reports are public on their site.

22 organic inputs - not just N-P-K

Terpene biosynthesis requires trace minerals, secondary metabolites, and specific enzyme cofactors that a 3-part bottled nutrient program doesn't supply. Glacial rock dust, basalt, kelp, neem cake, karanja cake, crustacean meal - these inputs cover the full spectrum, which is why growers switching from coco/synthetic consistently report improved aroma and flavor depth.

Specs

What you're getting in the bag

Bag Size

1.5 cu ft

Weight

~42 lbs per bag

Container Coverage

Fills one 10-gallon pot

Moisture Target

80–120 mbar (Blumat Meter)

Certifications

Registered as Fertilizer · Heavy Metal Tested

Re-amend Cost

Under $8 per 10-gal pot, per cycle

Ingredient Count

22 organic & natural inputs

Proven Lifespan

5+ years re-amended use

Full Ingredient Disclosure - 22 organic & natural inputs

Sphagnum Peat Moss, Oly Mountain Fish Compost, Earthworm Castings, Volcanic Pumice, KiS Organics Microbe Catalyst, Glacial Rock Dust, Basalt, Calphos Soft Rock Phosphate, Oyster Shell Powder, Organic Alfalfa Meal, Organic Fish Bone Meal, Organic Crustacean Meal, Kelp Meal (Ascophyllum nodosum), Neem Cake, Karanja Cake, Organic Fish Meal, Organic Feather Meal, Organic Steamed Bone Meal, Natural Calcite, Ag Lime, Mycorrhiza, and Beneficial Microbes.

How it works - the whole process, start to finish

1

Fill your container

Pour KiS Water Only Soil directly into your container - no mixing, no amending, no letting it "cook." The 1.5 cu ft bag fills approximately a 10-gallon fabric pot.

2

Plant into a seed-starter pocket

Dig a small hole in the top of your filled container, pack it with a light seed-starting mix, and plant your seed or transplant into that pocket. Once the taproot grows down into the KiS soil below, the water-only system takes over.

3

Water regularly - that's it

Keep the soil near field capacity: grab a handful and squeeze - only a drop or two should come out. If you're using a Blumat moisture meter, target 80–120 mbar. No nutrients, no pH adjusting, no feeding schedule to follow.

4

Harvest, re-amend, repeat

After harvest, top-dress with KiS Nutrient Pack (Small size, ~$8 per 10-gal pot) plus a cup of worm castings or compost. Water it in, rest 7-14 days, and you're ready for another cycle.

In the bag

What's in the 1.5 cu ft bag - and how far it goes

Every bag of Water Only Soil includes

Full grow-cycle nutrition - no bottle program needed
Live biology - microbes, mycorrhizae & Microbe Catalyst
Volcanic pumice for aeration and drainage
Glacial rock dust + basalt for trace mineral spectrum
Neem cake + karanja cake for natural pest suppression
Registered as fertilizer - heavy metal tested

Container sizing guide - 1.5 cu ft

5-gal fabric pot: ~0.75 cu ft - one bag fills two 5-gallon pots
7-gal fabric pot: ~1 cu ft - one bag fills one 7-gal with some left over
10-gal fabric pot: ~1.5 cu ft - one bag, one pot, exact fit
15-gal fabric pot: ~2 cu ft - two bags covers one 15-gal with room to spare
Pair with: KiS Nutrient Pack for re-amending between cycles (sold separately)

Not sure how many bags you need? Call or email us and we'll work it out with you. 716-217-0353 / help@happyhydro.com

Questions

Frequently asked questions

Can I really just water it and nothing else for the whole grow?

For most plants in appropriately sized containers, yes. The caveat: if you're growing a heavy-feeding plant in a small container (under 7 gallons), the soil may need a Nutrient Pack top-dress starting around week 4-5. For typical grows in 7-15 gallon containers, most growers never touch a nutrient bottle.

Will it work for autoflowers, photos, and vegetables? Is it too hot for seedlings?

It works for any container or raised bed crop. On the hot-soil question: the hot-soil problem comes from DIY super soils where nitrogen amendments haven't finished breaking down. KiS Water Only is pre-processed and the nutrition is biologically bound, not immediately soluble. That said, the recommended approach is to dig a pocket in the top of your filled container, pack it with a light seed-starting mix, and plant into that. Once the taproot reaches the KiS soil below, the system takes over.

Do I need to adjust pH when watering?

No. The mineral blend (oyster shell, ag lime, natural calcite, basalt) buffers pH naturally - tap water or well water at a reasonable pH works fine. If you're on city water with heavy chlorine, letting it sit 24 hours or using an RO filter is a nice touch but not required. If you do run supplemental nutrients, keep them at 1/4 the label rate.

How do I re-amend the soil after harvest for the next cycle?

Remove the root ball (or chop and drop for no-till), then top-dress with the KiS Nutrient Pack Small size (3.2 lbs covers ~1 cu ft) plus a cup of worm castings or compost. Water in, rest 7-14 days. Cost is typically under $8 per 10-gallon container. Biology improves each cycle.

I've noticed small insects in the soil - is something wrong?

Completely normal, and a sign the soil is alive and healthy. Living soil contains small organisms (springtails, mites, soil dwellers) that are part of the soil food web. They break down organic matter and support the microbial community that feeds your plant. If you're seeing fungus gnats in large numbers, that usually points to overwatering - keep the soil near field capacity and gnats won't get a foothold.

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

Email a photo 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 Water Only Soil from Happy Hydro?

Happy Hydro has been selling growing equipment and media since 2006. We carry KiS because it's one of the few living soil products we've seen consistently deliver on its promise - growers who buy it come back for it. 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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Every transaction is SSL encrypted. We don't store payment information and we will never sell your data to anyone, ever.

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 Original Water Only Soil Mix

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