9 min read

FloraMax Nutrients: Feed Chart and Dosing Guide for UK Growers

FloraMax runs on one base feed, Veg-1, with Root-XS, Flowering Enhancer, Resin-XS and OrganaBud added at set stages. This guide gives the week-by-week ml/L chart, pH targets and mixing tips for hydro, coco and soil.

Thomas Brown
Director, The Grow Superstore
Published Updated
FloraMax Nutrients: Feed Chart and Dosing Guide for UK Growers

What do you feed with FloraMax, and when? Run Veg-1, a single-bottle base feed, from seedling to harvest. Add Root-XS for roots until early flower, Flowering Enhancer from the first week of bloom, Resin-XS from mid bloom and OrganaBud throughout. The feed chart below gives the dose in ml/L for each phase and the pH to hold, so you can mix the right feed with confidence.

Transform your hydroponic, coco or soil grow with a complete five-product nutrient system, designed for beginner and professional growers who want explosive growth, massive yields and premium-quality harvests.

Who this guide is for: UK growers in hydro, coco or soil who have chosen FloraMax, or are weighing it up, and want one clear plan for what goes in the reservoir and when.

What is FloraMax and which products does it include?

FloraMax is a hydroponic nutrient range built around one base feed, Veg-1, with separate additives for roots, flowering, resin and quality. Because the base is a single bottle, there is no grow-and-bloom switch and no A and B parts to keep in step. The five core products are:

Together they make up the FloraMax Essential Nutrients 1L bundle, but every bottle is also sold on its own, so you can buy only what your grow needs. The powder versions and extras are in our FloraMax collection. New to nutrients altogether? Start with plant nutrients explained, or with our beginner's guide to hydroponics if the whole system is new.

Why use Veg-1 as your base feed?

This is simplified growing excellence: just five products covering your entire grow cycle. No more guessing what nutrients to use when - we've put together the combination that gives you consistent, professional results.

Veg-1 is a single-bottle, seed-to-harvest feed with a complete macro and micronutrient profile and fully chelated trace metals, including Iron DTPA. FloraMax designs it to carry plants through both veg and bloom, which is why the feed chart below never swaps the base. The manufacturer also says it runs clean, so it should not block drippers, and that it buffers pH, so soil and coco need little adjustment and recirculating hydro needs less pH Down than usual.

Do you still need Cal-Mag? It depends on your medium and your water, and getting it right can save you money and simplify your grows. FloraMax builds calcium, magnesium and iron into Veg-1 and Flowering Enhancer, so the manufacturer says no separate additive is needed when you dose as directed. Across all brands, though, coco and reverse osmosis (RO) or soft water are where Cal-Mag is most often needed, while hard-water soil growers usually need little or none. Mix as directed, watch the leaves, and see our pH, EC and water quality guide before adding anything extra.

Veg-1 also comes as a powder: FloraMax Veg-1 ProPowder is the same idea in soluble form.

What does each FloraMax additive do?

FloraMax Root-XS - explosive root development

Foundation builder | stress reducer | growth accelerator

Root-XS creates the foundation for big yields by supporting root and foliage growth throughout veg. It eases transplant stress, so plants stay healthier and more resilient. Use it from seedling or cutting stage, and pair it with our propagation masterclass and root-zone health guide for the wider picture.

FloraMax Flowering Enhancer - the 3-in-1 bloom optimiser

PK booster | Cal-Mag-iron supplement | pH stabiliser

It simplifies bloom nutrition with PK for large, vigorous flowers, plus calcium, magnesium and iron chelate to head off common deficiency signs such as leaf yellowing and curl, and a pH-stabilising effect that helps keep nutrient uptake steady. It is the first bloom additive in the chart.

FloraMax Resin-XS - the bloom finisher

Resin and oil booster | yield maximiser | quality enhancer

Resin-XS is built for growers chasing frosting, potency and quality, and it runs as clean as mineral salts. It contains PK, so it raises your EC. Follow the dose on the label. For wider bloom-booster timing, see our PK boosters guide.

FloraMax OrganaBud - the organic quality enhancer

100% organic | terpene booster | structure optimiser

Made with purified seaweed extracts, OrganaBud is used all the way through the grow to support bushier plant structure, more flowering sites, and better colour, aroma and terpene profile. It is completely soluble, so it will not cause system blockages.

What is the FloraMax feed chart, week by week?

Here is the plan in ml/L. The Veg-1, Root-XS, Flowering Enhancer, Resin-XS and OrganaBud doses and their application periods come from the FloraMax product pages, which do not give per-phase Veg-1 doses, so Veg-1 shows its full range throughout. For strength, follow the dose on the label and use your EC meter to check the finished mix. Weeks are approximate: veg runs as long as you like, and bloom length varies by variety.

Phase Veg-1 Root-XS Flowering Enhancer Resin-XS OrganaBud
1. Seedling or cutting (weeks 1-2) 3.5-6.4, start at the low end 2 (also suits foliar spray) - - 2
2. Vegetative (weeks 3-6) 3.5-6.4 2 - - 2
3. Early flower (bloom weeks 1-3) 3.5-6.4 2 2 - 2
4. Mid to late flower (bloom weeks 4-8) 3.5-6.4 - 2 2 from bloom week 4; the product page also suggests 3 in mid to late bloom 2
5. Final weeks (harvest preparation) 3.5-6.4, or follow the dose on the label - 2 2-3 2

How to read it:

  • Veg-1 is a range, so use your EC meter. Follow the dose on the label and move within the range as your plants and your water allow; our pH, EC and water quality guide explains how to read the meter. Your tap water's own EC counts towards the total.
  • Resin-XS contains PK, so it raises EC. Do not stack extra PK on top of it.
  • Start low. Begin at the bottom of each range and increase only if the plants ask for it.
  • Other brands. This chart is FloraMax-specific. For the generic stage-by-stage version, see our full-cycle feeding schedule; to compare lines, see choosing a nutrient line.

How do you mix FloraMax and keep pH on target?

Mixing order. Add products to water one at a time, following the order on the manufacturer's labels, and stir well after each. Never pre-mix concentrates together. Use a measuring syringe for small ml/L doses.

pH. Check pH after mixing, never before. For hydro and coco, hold 5.5-6.2 (most growers sit at 5.8-6.0); in soil, 6.0-6.8. Our pH, EC and water quality guide covers targets and calibration, and you will find pH Up and meters in our pH and EC testers collection. An EC and temperature meter is the other tool this chart really depends on.

Reservoir and medium upkeep. The Flowering Enhancer page says many growers find pH stable for 7-10 days or longer in recirculating systems, which fits the usual 1-2 week reservoir change described in our reservoir management guide. In coco and soil, flush the medium with plain water every 1-2 weeks. FloraMax System Maintenance is an organic cleaner for build-up and blocked drippers, and FloraMax Silica is an optional add-on for stem and leaf strength.

Liquid or ProPowder: which FloraMax format should you buy?

Both formats do the same jobs. Liquids are easiest to dose by ml/L; ProPowders dissolve in minutes, can go straight into the reservoir or into a stock solution, and can be pre-mixed dry with other FloraMax powders. Powder doses are in grams per litre (g/L), as listed on each product page.

Job Liquid ProPowder Powder dose (g/L) Used from
Base feed Veg-1 Veg-1 ProPowder 0.7-1.5 Seed to harvest
Roots Root-XS Root-XS ProPowder 0.1 Seed to bloom week 3
Bloom (PK, Cal-Mag-Iron, pH) Flowering Enhancer Flowering Enhancer ProPowder 0.4-0.8 Throughout flower
Resin and finish Resin-XS Resin-XS ProPowder 0.2-0.4 Bloom week 4 to harvest
Quality and structure OrganaBud OrganaBud ProPowder 0.1-0.15 Seed to harvest

Keep Root-XS, OrganaBud and Resin-XS away from chlorine and peroxide products, which break down organic additives. Pick one format per job and check the product pages for pack sizes.

FAQ

Do I need Cal-Mag with FloraMax? It depends on your medium and water. FloraMax includes calcium, magnesium and iron in Veg-1 and Flowering Enhancer, so many growers need nothing extra when dosing as directed. Coco and RO or soft water are the most likely cases where a Cal-Mag is still needed; hard-water soil rarely needs one. See our water quality guide.

What pH should I run FloraMax at? Hold 5.5-6.2 in hydro and coco, with most growers at 5.8-6.0, and 6.0-6.8 in soil. FloraMax buffers pH, so you may adjust less than with other feeds, but check after every mix.

Can I use FloraMax in soil, coco and hydro? Yes. Veg-1 is made for hydroponics, coco and soil. Which medium suits you is covered in soil vs coco vs hydro.

How often should I change the reservoir? The Flowering Enhancer page says many growers find pH stable for 7-10 days or longer in recirculating systems, so changing the reservoir every 1-2 weeks is a sensible guide. In coco and soil, flush with plain water every 1-2 weeks.

Can I use FloraMax additives with another base nutrient? FloraMax's ProPowder product pages describe Flowering Enhancer and Root-XS as compatible with other base feeds. Keep one base feed, add one product at a time and follow the chart. Compare lines in choosing a nutrient line.

Where to buy FloraMax and what to read next

Shop the FloraMax collection for the liquids and powders. Related guides: plant nutrients explained, pH, EC and water quality and root-zone health.

Our advice from the shop floor: change one thing at a time, and let your meter, not the top of each dose range, set the strength. Experience the FloraMax difference – where cutting-edge plant science meets practical growing solutions for consistently exceptional harvests.

We've been helping UK growers since 2009, online and from our Peterborough store at 6 Wulfric Square, Bretton, PE3 8RF. Pop in for a free in-store consultation and we'll talk through your feed plan with you.