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2-PART LIQUID SUPER-CONCENTRATE · ALWAYS DISPERSE PART A FULLY BEFORE ADDING PART B · NEVER COMBINE CONCENTRATES DIRECTLY
Tropical CEA Hydroponic Base Nutrient
One of Only 6 Companies Globally Dosing 1mL/L to Hit 1.2 EC

NH Lettuce Formula

A precipitate-free, 2-part liquid super-concentrate engineered to grow export-grade, high-density hydroponic lettuce in Philippine heat — locked to a precise 1:1 Nitrogen-to-Potassium ratio for dense, crisp, tip-burn-free heads.

Part A — Grow Part B — Bloom Dosed 1 : 1
1:1 N:K osmotic turgor lock
Ca + B defense against Tip-Burn
Elevated S + Mg anti-bolting
Iron stable in water up to pH 7.5
Order the 2-Part Set
Dosing Calculator
LETTUCE // ROOT-ZONE TELEMETRY ACTIVE
N P Ca
STATUS: HEAD DENSE
N : K LOCK: 1 : 1
TIP-BURN: NONE
FE @ pH 7.0: BIOAVAILABLE
NITROGEN (N)121.5 ppm
POTASSIUM (K)121.4 ppm
CALCIUM (Ca)98.0 ppm
World Class Agrotech Standard

An Elite Technical Feat Only 6 Companies in the World Can Achieve

Standard hydroponic formulas require heavy, low-density dosing configurations (often requiring 2.5 mL to 5.0 mL of concentrates per liter of water) to register an Electrical Conductivity (EC) of 1.2.

NutriHydro Lettuce Formula is engineered as a liquid super-concentrate. It hits a powerful 1.2 EC with just 1 mL per Liter of water. We are proud to be one of the six agronomic developers globally capable of stabilizing mineral nutrients at this intensity without chemical fallout or precipitation.

1:1
Milliliter Ratio

1 mL of Part A + 1 mL of Part B achieves full-strength targets.

1.2
Target EC

Unmatched mineral payload bioavailability delivered instantly.

6
Elite Group

One of six manufacturers globally holding this formulation density.

0
Precipitate

Zero crystallizations or dropouts in lines, tanks, or injectors.

    Critical Tropical Failure Modes

    Four ways tropical heat ruins a lettuce crop

    Commercial hydroponics in the Philippines fails in predictable ways. The formula is engineered specifically to neutralize each one.

    VPD Collapse

    Marginal Necrosis (Tip-Burn)

    When monsoon humidity exceeds 95%, transpiration stalls and immobile Calcium can no longer climb to the newest leaves — the margins collapse into brown, unsellable necrosis.

    Optimized Calcium + Boron integration holds cell walls stable.
    Root-Zone Hypoxia

    Pythium & Warm-Water Rot

    Above 28°C the reservoir loses its ability to hold dissolved oxygen. Hypoxic roots are colonized by Pythium within hours, collapsing the entire batch.

    Clean, precipitate-free chemistry keeps lines clear for aeration & oxidative dosing.
    Thermal Stress

    Wilting & Premature Bolting

    Above 35°C, nitrogen-heavy feeds drive rapid internode elongation (bolting) and bitter compounds, while the canopy wilts at mid-day.

    Elevated Sulfur (18.2 ppm) & Magnesium (24.3 ppm) build thermotolerance and keep heads compact.
    Alkaline Water

    Iron Precipitation & Chlorosis

    Philippine deep-well water is heavy in bicarbonates. As pH drifts above 6.5, standard iron oxidizes and drops out of solution, yellowing the leaves.

    A premium DTPA / EDDHA iron payload stays bioavailable all the way up to pH 7.5.

      The 3-Stage Precision Program

      One stable ratio. Three rising doses.

      Lettuce is steered by volume, not by switching formulas. The 1:1 N:K ratio stays locked while the dose climbs from seedling to harvest. Select a stage to see the target.

      Stage 1 · Establishment

      Seedling & Transplant

      Low osmotic pressure for rapid root initiation and balanced uptake — building the root system without inducing salt stress.

      Target EC*
      0.6–0.7 mS/cm
      Dose (each part)
      0.5 mL/L
      Calcium
      49.0 ppm
      Iron (DTPA)
      1.00 ppm
      N : K Osmotic Lock
      Nitrogen60.7 ppm
      Potassium60.7 ppm
      ⚖ PERFECT 1 : 1 EQUILIBRIUM
      Stage 2 · Expansion

      Vegetative Expansion

      Maximizing Leaf Area Index (LAI) and vascular development. Nitrogen is held moderate to prevent weak, elongated growth under greenhouse heat.

      Target EC*
      1.0–1.1 mS/cm
      Dose (each part)
      0.8 mL/L
      Calcium
      78.4 ppm
      Ca : Mg ratio
      4 : 1
      N : K Osmotic Lock
      Nitrogen97.2 ppm
      Potassium97.1 ppm
      ⚖ PERFECT 1 : 1 EQUILIBRIUM
      Stage 3 · Hardening

      Peak Finishing

      Turgor optimization and stress-resistance activation for maximum harvest weight. Potassium supercharges phloem loading for crispness; Sulfur triggers heat-protective antioxidants.

      Target EC*
      1.2–1.3 mS/cm
      Dose (each part)
      1.0 mL/L
      Sulfur
      18.2 ppm
      Magnesium
      24.3 ppm
      N : K Osmotic Lock
      Nitrogen121.5 ppm
      Potassium121.4 ppm
      ⚖ ELITE 1.2 EC @ 1 mL/L DENSITY MARK

      *Target EC is the conductivity from fertilizer alone. Add your source water's baseline EC to set the absolute target.

      Target EC 0.6-0.7
      Dose/Pt 0.5 mL/L
      Calcium 49.0 ppm
      Iron 1.00 ppm
      N : K Osmotic Lock
      Nitrogen 60.7 ppm
      Potassium 60.7 ppm
      ⚖ PERFECT 1 : 1 EQUILIBRIUM

      The Full 12-Element Matrix

      No horizontal scrolling. Tap any stage below to dynamically overlay target parameters instantly.

      Active Elemental Profile
      Nitrogen (N)
      60.7ppm
      Canopy & foliage, kept moderate to stop bolting
      Phosphorus (P)
      15.0ppm
      ATP & root branching energy
      Potassium (K)
      60.7ppm
      Osmoticum — locked 1:1 to N for crispness
      Calcium (Ca)
      49.0ppm
      Cell-wall structure, anti tip-burn
      Magnesium (Mg)
      12.1ppm
      Chlorophyll core; held at 4:1 Ca:Mg
      Sulfur (S)
      9.1ppm
      Glutathione antioxidant — thermotolerance
      Iron (Fe)
      1.00ppm
      Chlorophyll & electron transport (chelated)
      Manganese (Mn)
      0.23ppm
      Photosystem II; held 1:4 with Fe
      Zinc (Zn)
      0.35ppm
      Auxin synthesis & leaf expansion
      Copper (Cu)
      0.035ppm
      Lignification & shelf life
      Boron (B)
      0.23ppm
      Calcium transport & cell-wall cross-linking
      Molybdenum (Mo)
      0.015ppm
      Nitrate reduction
      Inside the Formula

      Why this liquid stays clear at commercial density

      Three engineering decisions separate the NH Lettuce Formula from generic powders that clog dosers and crash out of solution.

      Osmotic Engine

      The 1:1 N:K Lock

      Holding Nitrogen and Potassium in exact equilibrium regulates the vacuole's osmotic potential, forcing aggressive water uptake into the cells. The result is dense, turgid heads that snap crisp instead of the flaccid tissue typical of high-nitrogen tropical feeds.

      N : K = 1 : 1 · ALL STAGES
      Solubility

      High Solubility Potassium & Sulfate

      By completely eliminating low-solubility Potassium, this formula is engineered using only premium, ultra-soluble mineral inputs. This precipitate-free design guarantees the concentrate stays fully clear at commercial strength and feeds cleanly through peristaltic pumps and automated venturi injectors.

      100% PRECIPITATE-FREE
      Micronutrient Defense

      DTPA / EDDHA Iron Payload

      Philippine deep-well water is alkaline. A premium dual-chelate iron system (DTPA with an EDDHA failsafe) keeps iron bioavailable up to pH 7.5, eliminating the interveinal chlorosis that plagues bicarbonate-heavy source water.

      BIOAVAILABLE TO pH 7.5
      Fertigation Standard Operating Procedures

      Three ways to run it

      Whatever your facility's architecture, the formula drops in. Pick your method.

      BEST FOR: High-tech greenhouses — Bluelab, Priva, TrolMaster, Rufepa
      1. Insert the Pump A suction line directly into the NH Lettuce Formula Super Concentrate A, and the Pump B line into NH Lettuce Formula Super Concentrate B.
      2. Program the dosing computer to pull Part A and Part B at a strict 1:1 ratio (equal volumetric parts).
      3. Enter the target EC for the crop's current stage. The computer pulses the pumps to hold that baseline automatically.
      BEST FOR: Automated farms using water-driven proportional injection
      1. Place the Part A injector upstream of the Part B injector so Part A fully dilutes into the main line before Part B is introduced.
      2. Set injection rates by stage: 0.50 mL/L each (Seedling), 0.80 mL/L each (Vegetative), 1.00 mL/L each (Finishing).
      3. Verify the delivered EC at an emitter and adjust against your source-water baseline.
      BEST FOR: Commercial farms mixing 1,000–5,000 L day tanks manually
      1. Fill the reservoir to 80% capacity with clean water and start the circulation pump.
      2. Add Part A first; circulate 3–5 minutes until fully dispersed. Never pour the concentrates together.
      3. Add Part B; circulate another 3–5 minutes.
      4. Top off to the final mark, circulate 10 minutes, then adjust pH to 5.8–6.2.

        Precision Dosing Calculator

        Mix the exact NH Lettuce Formula dose

        Select the crop stage and tank volume. The calculator shows the Part A and Part B dose, fertilizer EC target, and the complete 12-element ppm matrix.

        Seedling / Transplant
        Low osmotic pressure for early root initiation.
        Pour into tank · Part A : Part B = 1 : 1
        Part A · Grow
        500 mL
        Part B · Bloom
        500 mL
        Target EC contributed by fertilizer 0.6–0.7 mS/cm
        12-element ppm matrix
        For actual EC target, add your source water baseline EC to the fertilizer EC shown here.
        Part A Dosing
        500 mL
        Part B Dosing
        500 mL
        Target EC contributed by fertilizer 0.6-0.7 mS/cm

        Mixing order: water → Part A, circulate 3–5 mins → Part B, circulate 3–5 mins → adjust pH to 5.8–6.2.

        Environmental Steering

        Keep the closed loop honest

        In recirculating systems the solution drifts. Tap any rule below to access targeted steering actions.

        Begin with source water below 0.5 mS/cm. Bicarbonate-heavy deep-well water pushes pH up and precipitates iron — pre-treat before you fertigate.

        STEERING RULE: Filter using reverse osmosis (RO) or pre-treat bicarbonates with safe acid dosing prior to blending.

        Nitrate-dominant lettuce feeds drift the pH upward. Maintaining a strict window limits physiological chlorosis.

        STEERING RULE: Hold at 5.8 – 6.2. Adjust with NH pH Down Nitrogen Base during vegetative stages.

        Under tropical greenhouse heat, lettuce drinks water faster than nutrients, concentrating mineral salts inside the loop.

        STEERING RULE: Top off daily with pure water to baseline EC before re-dosing. Never let reservoir exceed 1.8 mS/cm.

        Accumulations of organic root exudates and imbalanced mineral ratios corrupt absorption dynamics over time.

        STEERING RULE: Completely flush and replace the nutrient reservoir on a strict 14–21 day cycle.
        Validated Cultivars

        Calibrated for commercial lettuce

        Tuned for the specific leafy-green cultivars grown across Philippine CEA and lowland greenhouse operations.

        Romaine Profile

        Optimized Cycle 30 Days
        Target EC 1.2 mS/cm

        Romaine requires strict turgor lock (1:1 N:K ratio) to prevent cell wall collapse and marginal tip-burn during the final 5 days.

        Success Metrics

        What success looks like

        120g – 150g
        Premium Head Density
        Bendy / Limp
        Cellular Turgor
        Frequent droop
        Midday Heat Stress
        Up to 20% loss
        Necrosis Risk
        Guaranteed Analysis

        Composition

        Combined 2-Part Set Active Concentration · Blended % W/V

        Combined Set Analysis
        Part A Part B
        Total Nitrogen (N)12.00%
        Available Phosphate (P₂O₅)6.86%
        Soluble Potash (K₂O)14.43%
        Calcium (Ca)9.78%
        Magnesium (Mg)2.43%
        Sulfur (S)1.82%
        Iron / Zn / Mn / B / Cu / Mochelated micros
        Grower Inquiry Desk

        Frequently asked questions

        Why must I add Part A before Part B?

        Part A carries the Calcium and Part B carries Phosphate and Sulfate. If the two concentrates touch before they're diluted in the tank, they instantly form insoluble calcium phosphate and calcium sulfate. Dispersing Part A fully into the water first keeps everything in solution.

        Why is the N:K ratio exactly 1:1 the whole way through?

        Equal Nitrogen and Potassium balances the osmotic potential inside the cell vacuole, driving aggressive water uptake without nutrient lockout. That is what gives the head its dense, crisp, turgid texture instead of the soft, flaccid growth you get from high-nitrogen tropical feeds.

        My deep-well water is alkaline. Will the iron still work?

        Yes. The formula uses a premium DTPA chelate with an EDDHA failsafe, keeping iron bioavailable up to pH 7.5 — well above the point where ordinary iron sources oxidize and precipitate out. Still, start with source water below 0.5 mS/cm and manage bicarbonates with pH Down.

        Can it run through my automated dosing computer?

        That's exactly what it's built for. The precipitate-free, Split-Potassium liquid feeds cleanly through peristaltic pumps and venturi injectors with no clogging — just set the doser to a 1:1 A:B ratio and target the stage EC.

        What does "1 of 7 companies globally" mean for my farm?

        It means unmatched concentration density. Most competing products require twice or three times the fluid volume to deliver the same amount of active ions to your plants. This is an elite formulation standard. It means you ship less water, buy less plastic, save storage space, and run automated systems far more precisely with zero crystallizing risk.

        What EC should I never exceed?

        Keep the fertilizer EC within the stage targets (up to 1.2–1.3 mS/cm at finishing, achieved precisely at a 1.0 mL/L dosage rate). In a closed loop under heat, salts concentrate as the crop transpires — top off daily with fresh water and don't let the reservoir drift past 1.8 mS/cm, which becomes phytotoxic.

        ORDER THE 2-PART SET

        Grow export-grade lettuce in the tropics

        NH Lettuce Formula—the precipitate-free liquid super-concentrate engineered for dense, crisp, tip-burn-free heads in Philippine heat. Part A + Part B, dosed 1:1.

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