Choosing a Nutrient Line: Biobizz vs Canna vs Dutch Pro vs Plagron vs Gold Label

Choosing a nutrient line? Match the line to your growing medium and your tap water; brand loyalty comes second. Canna is the benchmark with a range for every medium, Biobizz the organic soil pick, Dutch Pro the value line that labels its base feeds by water type, Plagron the most flexible system, and Gold Label the hydro specialist. All five grow excellent plants; the costly mistake is bottles built for the wrong medium or water.

A nutrient line is a matched family of base feeds and additives from one manufacturer, designed to cover a plant's needs from rooting to harvest on a single feed chart. The five lines below dominate UK grow-shop shelves and differ far more in format — organic or mineral, one-part or two-part, water-matched or not — than in results. Still choosing a medium? Start with our soil vs coco vs hydro guide — it dictates the line. If NPK labels are new, our plant nutrients guide explains what NPK means.

Who this guide is for: UK growers who have picked their growing medium and now need to commit to one brand's feed chart without wasting money on the wrong bottles. New to hydroponics? Start with our beginner's guide to hydroponics.

How do Biobizz, Canna, Dutch Pro, Plagron and Gold Label compare?

The shortlist, ranked by how easy each line is to buy right, not by plant quality:

1. Canna — the benchmark. A dedicated range for every medium; the proven pick for coco.
2. Biobizz — the organic one. Certified-organic bottles at low doses; the simple, forgiving soil choice.
3. Dutch Pro — the UK water specialist. Base feeds are labelled by water type, and the hard-water versions are the ones listed here; strong value for a hard-water supply.
4. Plagron — the flexible system. Four "grow styles" from fully organic to fully hydro under one brand.
5. Gold Label — the hydro and 60/40 specialist. Dose-to-EC nutrients built around its own Special Mix and coco/pebble media.

Canna nutrients and Biobizz nutrients are the usual starting points; Plagron nutrients and Gold Label nutrients draw the most in-store questions, and the sections below spell out where each fits. The table shows each manufacturer's full range, so check the brand collections below before planning around one bottle.

Which nutrient line suits soil, coco or hydro?

Match the product range to the medium — never run a soil feed in a hydro system.

Three things stand out: Canna is the only line here with a dedicated recirculating range (Aqua Vega A&B and Aqua Flores A&B); Dutch Pro covers coco and hydro with one A&B feed; and Plagron's organic Alga line is soil-only — Plagron itself says it is not suitable for hydro. Using rockwool or clay pebbles? Our rockwool, perlite and clay pebbles guide matches media to feed; the coco collection has the coir.

Biobizz vs Advanced Nutrients: how do they differ?

Advanced Nutrients is the name most often set against Biobizz, and the two take opposite routes:

Advanced Nutrients can't guarantee that pH hold if you add another maker's products, so test again if you mix brands.

Hard water or soft water: which version do you need?

The Drinking Water Inspectorate classes supplies up to 100 mg/l of calcium carbonate as soft, over 200 mg/l as hard and over 300 mg/l as very hard. Much of central, eastern and southern England sits in the hard bands — including Peterborough, where chalky groundwater keeps Anglian Water's region firmly hard — while Scotland, Wales and the north-west trend soft.

Hard water already carries plenty of calcium and magnesium, soft water very little, so one formulation cannot suit both — a distinction generic (usually American) comparisons skip. Dutch Pro labels its base feeds by water type, and its Hydro/Coco product page says soft-water areas need the separate Soft Water version. Check the water version named in the product title before you buy. If your line has no water versions, you'll balance with Cal-Mag instead — more on that below.

How far does a bottle go? Cost per litre of mixed feed

Ignore shelf price and work out what a litre of mixed feed costs: divide 1,000 by the label dose in ml/L to get the litres of feed a 1-litre bottle makes, then divide the bottle price by that — for both parts of a two-part line.

(Gold Label doses to EC rather than a fixed ml/L, so it isn't costed here — check the bottle's target EC and your meter.) Label doses vary several-fold, and a two-part feed at 3 ml/L of each part uses 6 ml of concentrate per litre. That's why a cheap-looking bottle with a heavy dose can cost more per feed than a pricier concentrate: do the division before judging value.

Follow your manufacturer's own feed chart; our week-by-week feeding schedule covers the generic plan.

What do the boosters and additives in each line actually do?

You don't need every additive a brand sells; these are the ones worth knowing:

• Canna: Rhizotonic (root stimulant), Cannazym (enzymes), Boost Accelerator and PK 13/14 (flowering).
• Biobizz: Root Juice, Top-Max (bloom), Alg-A-Mic (stress recovery) and the classic Fish Mix soil conditioner.
• Dutch Pro: Take Root, Multi Total (breakdown of organic matter) and Explode (bloom).
• Plagron: Power Roots, Pure Zym, Sugar Royal and Green Sensation — the additive Plagron growers rarely skip.
• Gold Label: the Ultra LED trio (No.1 Grow and No.2 Bloom, No.3 Boost), a simple all-substrate system.

Get the base feed right first; enzymes, microbes and silicon are covered in our root-zone health guide, bloom-booster timing in our PK boosters guide, and rooting cuttings in our propagation masterclass.

Do you need Cal-Mag with these lines?

It depends on your water, your medium and your line. Coco and soft or reverse-osmosis water usually need it; hard-water soil growing usually doesn't. Canna designs its nutrients for tap water with a calcium-and-magnesium background EC of 0.4–0.7, recommending Cal-Mag Agent only to lift very soft or reverse-osmosis water to that floor. Dutch Pro labels its feeds by water type, so choosing the right version matters before you reach for a separate Cal-Mag bottle such as Dutch Pro Calmag, and Biobizz sells Calmag too. Check your water with a meter from our pH and EC testers; the full pH, EC and Cal-Mag picture lives in our water quality guide, and overfeeding and lockout has its own guide.

What about Athena, Advanced Nutrients and FloraMax?

Three more lines on our shelves deserve a mention: Athena, a commercial-style system of Blended Grow A&B and Bloom A&B liquids or concentrated Pro Core powders for bigger, dialled-in rooms; Advanced Nutrients, the deep catalogue covered above; and FloraMax, a compact hydro range built around VegaFlora A&B, with Veg-1 as its one-part base feed, covered in our FloraMax Essential Nutrients guide. All three are capable — we've simply focused on the five lines most UK growers start with.

FAQ

Is Canna better than Biobizz? Neither is better — they solve different problems. Canna is a mineral line with medium-specific ranges and the long-standing coco benchmark; Biobizz is a certified-organic line at its simplest in soil. Pick by medium and growing philosophy, not brand reputation.

Do I need hard water or soft water nutrients? Check your water company's postcode checker. Above roughly 200 mg/l of calcium carbonate your supply is officially hard, and much of central, eastern and southern England qualifies. Check the water version named in the product title: the Dutch Pro Hydro/Coco A&B feeds listed here are hard-water versions, and soft-water areas need the manufacturer's Soft Water version.

What are the best nutrients for coco in the UK? Canna Coco A&B is the long-standing benchmark, with Dutch Pro Hydro/Coco A&B, Gold Label HydroCoco A&B and Advanced Nutrients' Sensi Coco close behind. Whichever you pick, use a coco-specific base feed rather than a soil one.

What is the best hydroponic nutrient? There is no single best; match the line to your system. Canna Aqua is the dedicated recirculating range here, while Dutch Pro Hydro/Coco A&B or Gold Label HydroCoco A&B suit run-to-waste and coco, after checking the water version named in the product title against your tap.

Can you mix nutrient brands? Within reason. Growers routinely run one brand's base feed with another brand's additives, but feed charts assume their own products, so mixing makes troubleshooting harder. Keep one base feed and change one thing at a time.

Recommended kit and further reading

Every line in this guide is on our shelves:

• Canna Nutrients & Soils — Terra, Coco and Aqua base feeds plus Rhizotonic, Cannazym and PK 13/14.
• BioBizz — the full organic range; Biobizz Bio Bloom is its flowering workhorse, with Bio-Grow for the growth stage.
• Dutch Pro — Soil A&B and Hydro/Coco A&B base feeds matched to your water, plus Explode and Multi Total.
• Plagron Nutrients — Terra Grow and Terra Bloom with Green Sensation, Power Roots and Sugar Royal.
• Gold Label — Special Mix, 60/40 coco/pebble media and the 60/40 A&B HydroCoco nutrient.
• Also worth a browse: Athena, Advanced Nutrients and FloraMax.

Most relevant collection: Nutrients & Boosters — every line above in one place. Building a first hydro kit? See our hydroponics starter kit list.

Why trust The Grow Superstore

We've sold and run these exact nutrient lines since 2009, online and from our physical store in Peterborough — a hard-water city, so matching feeds to awkward tap water is daily work for us, not theory. The advice we give at the counter every week starts with two questions: what are you growing in, and what does your water company say about your postcode? Pop in to 6 Wulfric Square, Bretton, PE3 8RF for a free in-store consultation and we'll match a line to your medium, water and budget.