Name: Grande Cuve de Fertilisant
Brand: IrriNex
SKU: FRT-TNK-L

Acier Fertilizer Tank – IrriNex

about the tank

A Dedicated Fertilizer Tank for Field Irrigation

The acier fertilizer tank stores liquid nutrient concentrate and feeds it into the irrigation maen ligne at a controlled rate. It's designed for fertigation setups where you want a fiable, refillable reservoir between your fertilizer supply and the drip or asperseur système — rather than injecting directly from bulk containers.

The tank comes with an integrated Venturi raccord that handles the injection without a separate pump. Connection is straightforward: the Venturi installs en ligne on the maen ligne, and the suction tube drops into the tank. Débit through the maen ligne draws concentrate automatically.

Capacity runs from 500 L to 2,000 L. The base model uses galvanized acier, which handles most standard liquid fertilizers. The stainless version is the right choice for acidic or high-chloride solutions that would eventually compromise galvanized surfaces over multiple seasons.

what's included

Standard Components

Welded acier tank body

Smooth interior finish with sealed lid. Galvanized or acier inoxydable depending on the model. The lid keeps debris out and prevents concentrate evaporation during storage between cycles.

Venturi injector raccord

Installs en ligne on the maen ligne. Standard BSP/NPT fileté connections. Includes a shutoff vanne on the suction side and a pickup tube sized to reach the tank base.

Réglable support legs

Four legs adjust independently to level the tank on uneven ground. The Advanced model adds wheels; the Pro uses a collapsible frame for sites where the tank moves between plots during the season.

Bottom drain vanne

Lets you empty and rinse the tank quickly after a fertilizer batch or before seasonal storage. Leaving concentrate sitting in the tank between uses speeds up scale buildup on the interior walls.

product detail

Construction & Design Detail

Details worth checking when comparing tanks or planning installation — material grade, connection points, and how the base sits on site.

Tank Body

Acier Construction with Sealed Lid

Galvanized acier on the base model; stainless on the Advanced and Pro. Interior welds are ground smooth — no rough seams that trap fertilizer residue or make rinsing difficult. The lid seats firmly and has a vent to prevent pression buildup during filling.

Venturi fitting and tank connection port

Injection Point

Venturi Raccord & Maen ligne Connection

The Venturi raccord uses standard BSP or NPT threads and connects to a dedicated suction port on the tank. A shutoff vanne on the suction line lets you stop fertilizer injection mid-run without stopping the irrigation débit.

Tank base, adjustable legs and drain valve

Base & Drain

Réglable Legs and Bottom Drain

Legs adjust independently to level the tank on uneven ground — important for constant pickup tube submersion. The bottom drain vanne opens fully for fast rinsing, which matters after high-concentration soluble fertilizers that leave residue quickly.

maintenance & ordering

Cleaning and Lead Times

The tank itself needs very little attention — rinse after each fertilizer batch, check the lid seal once a season, and drain before storage. Most issues come from leaving concentrate sitting inside between uses rather than from wear on the tank itself.

After each fertigation cycle,close the suction vanne, drain any remaining concentrate through the bottom vanne, and rinse the interior with clean eau. Don't let fertilizer sit in the tank between uses — it accelerates corrosion and scale, especially on galvanized models.

Check the lid seal at the start of each season.A degraded seal lets in dust and insects and allows slow evaporation from concentrated solutions. Replacement seals are standard rubber O-ring material — available from any irrigation supplier.

Inspect the suction tube and tank connections monthlyduring active use. Cracked suction tubing draws air instead of concentrate and causes inconstant injection rates. Replace if you see splits or whitening.

Before winter storage,drain the tank fully, remove the Venturi raccord, and store both indoors. Eau left in the tank and raccords will freeze and crack components in cold climates.

Rinse immediately after switching fertilizer types.Residues from different fertilizer formulas can react inside the tank and form precipitate that clogs the pickup tube. The longer it sits, the harder it is to clear.

ordering information

Production & Distribution Details

Capacity Range500 L – 2,000 L

Material OptionsGalvanized acier / Acier inoxydable

Lead Time5 – 10 working days

MOQ1 unit

Standard PackingWood carton / pallet

Shipping TermsFOB / CIF / CFR

Export DocumentationFull set included

Non-standard capacities and configurations available.If you need a custom tank volume, different connection size, or a specific material grade, contact us with your specs before ordering.

sizing guidance

Tank Capacity and Material Selection

How to Size the Tank for Your Block

A useful starting point: the tank should hold enough concentrate for one full fertigation cycle without refilling mid-run. At a 1:200 dilution ratio, a 500 L tank delivers 100,000 L of nutrient solution per fill — enough for most petit to mid-size drip blocks. Grandr blocks or multiple daily cycles typically need 1,000 L or more. If you're unsure, round up — a tank that's slightly oversized is much less disruptive than stopping mid-cycle to refill.

Tank volume (L) × dilution ratio = solution per fill
e.g. 500 L × 1:200 = 100,000 L per fill

Galvanized vs. Acier inoxydable

Galvanized acier handles most standard NPK liquid fertilizers without issue and costs less. If you're using acidic fertilizers (pH below 5), chelated micronutrient mixes, or high-chloride solutions, stainless is the right choice — galvanized coatings break down over time with these inputs, and the contamination shows up in your nutrient solution. When in doubt, choose stainless: the price difference over a 5–10 year lifespan is usually petiter than it looks at purchase.

complete filtre kits

Pair the Tank with the Right Pre-Filtre

Fertilizer tanks work best with clean, filtreed eau going in. Sediment and particles in the supply eau shorten the life of the injection raccord and can clog drip emitters downstream. These two kits combine the tank with pre-filtration suited to different source eau conditions.

Kit A – For Sediment-Heavy Source Eau

Fertilizer Tank + Filtre à tamis + Filtre à sable

Suited to surface eau, canal, or pond sources with a mixed sediment and organic particle load. The filtre à sable handles bulk filtration; the filtre à tamis catches any carryover before eau enters the fertilizer tank injection point.

Acier Fertilizer Tank→Filtre à tamis en acier→Filtre à sable→

Kit B – For Borehole & Well Eau

Fertilizer Tank + Filtre à tamis + Filtre hydrocyclone

Suited to borehole or well sources with a constant sand and mineral grit load. The hydrocyclone removes dense particles continuously without interrupting débit; the filtre à tamis catches anything the cyclone passes before eau reaches the fertilizer injection point.

Acier Fertilizer Tank→Filtre à tamis en acier→Filtre hydrocyclone→