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FloraMax Dosage Calculator

Major update:  25 Aug 2022
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FloraMax Growers Guide

FREE from our exclusive dealers.  Latest edition released Jan 2024.

Extensive 6-page growers guide that provides important information for maximizing both yield and quality.  Topics include nutrient management and growing techniques for cuttings, veg phase and bloom – including topping and LST.   Contains helpful colored images and diagrams and explains complex and often misunderstood issues in simple and concise language.  Written by Andrew Taylor – chemist and founder of FloraMax.

Download here: English

FloraMax Veg-1 Feedcharts

Updated:  1 Jan 2024.  For hard or soft water in hydro, coco, soil, DWC. 

Products catalogue

FloraMax VegaFlora AB Feedcharts

Updated:  1 Jan 2024.  For hard or soft water in hydro, coco, soil, DWC.

Products catalogue

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Frequently asked questions (FAQ’s) for FloraMax feed charts

How to raise (or lower) EC by 0.1mS?
Raise (or lower) the Veg-1 dose by 0.4ml/L, or VegaFlora A & B by 0.2ml/L.
Hard (salty) water?
This generally applies if water’s EC is 0.5 – 1.0mS.  Hard (salty) water will elevate EC.  Refer to the ‘Hard water’ chart. 
DWC or sensitive plants?
Refer to the ‘Hard water’ chart. 
Can Resin-XS be used at higher dose rates?
The latest version of Resin-XS (NPK 0-1-4) can be used at upwards of 3-4ml/L (11.5-15ml/Gal).  Under the right conditions, this will significantly improve mass yield and terpene profile. However note, these higher dose rates will increases EC by 0.15-0.3mS and therefore, in some cases it will be necessary to use the lower dose rate for Veg-1 or VegaFlora AB.
What if the nutrient batch EC is higher or lower than expected?

The EC target can be verified by calculating the sum total of the EC contributed from each product in the nutrient solution.  For example, on the VegaFlora AB Dose Chart, the schedule for Veg Week-1 contains four components that contribute to the EC target: VegaFlora A contributes 0.67mS (at 2.4ml/L; 9ml/Gal)) + VegaFlora B, 0.58mS + Root-XS, 0.1mS and OrganaBud, 0.07mS.  The sum total of the EC is 1.42mS (i.e., 0.67+0.58+0.1+0.07=1.42mS).  Note, System Maintenance and Silica contribute negligible EC, hence their EC contribution is not specified. Now, if the EC target is not achieved, the reasons might be as follows:

EC is lower than expected:

  1. Check the meter’s accuracy using a calibration standard (typically at 2.76mS).  This is by far the most common cause of EC discrepancies.
  2. You have under-dosed with one or more products.
  3. Reservoir is larger than specified i.e., need to calibrate the reservoir.
  4. Failed to add one or more products that contribute EC.
  5. Measuring devices are inaccurate and need calibrating.

EC is higher than expected: 

  1. Check the meter’s accuracy using a calibration standard (typically at 2.76mS).  This is by far the most common cause of EC discrepancies.
  2. Have over-dosed with one or more products.
  3. Reservoir is smaller than specified i.e., need to calibrate the reservoir.
  4. Failed to consider the EC contributed by the water and extra additives.  For example, if water has an EC of 0.3mS, then this needs to be added to the EC target (1.42+0.3 = 1.72mS).  Similarly, if Ca-Mg-Fe is added at 0.5ml/L, this will contribute 0.14mS, or 1ml/L will contribute 0.28mS.
  5. Measuring devices are inaccurate and need calibrating.
When using FloraMax, do I need a cal-mag?
No.  The FloraMax line is designed to eliminate the requirement for additional “cal-mag” additives as it is built into our base nutrients and Flowering Enhancer product.  Over hundreds of test grows during the development phase there was never any need for a dedicated cal-mag additive. Furthermore, use of additional “cal-mag” may result in excessive calcium precipitate leading to clogged lines or build-up.  In the unlikely event that deficiency symptoms occur, add FloraMax Ca-Mg-Fe at 0.5ml/L (0.14mS).  If that fails to fix the problem within 1-week, increase its usage rate to 1ml/L (0.28mS). If that fails then the issue is probably not due to cal-mag or trace elements (Fe, Cu, Mn, Zn, Mo or B).
Should I be adding *extra* PK additives or finishers to the FloraMax feeding schedule during bloom?
No, the PK levels (Phosphorous and Potassium) are optimized with Flowering Enhancer, Resin-XS (0-1-4) and the FloraMax base nutrient (VegaFlora AB or Veg-1).  During mid-to-late bloom, we generally recommend using Resin-XS at 3-4ml/L (11.5-15ml/Gal).  For heavy feeders, 4ml/L (15ml/Gal) generally provides significant improvements in mass yield and terpene profile.
Should Silica be added first or last?
FloraMax Silica is highly concentrated and should always be pre-diluted least 10-fold with water before adding to the reservoir.  Failure to do this may cause white particles to form when it is added to the nutrient solution.  This problem is more pronounced at higher EC’s especially when using hard or salty waters.  Note, these “white particles” will normally dissolve if the nutrient is immediately stirred and is therefore typically only an aesthetic problem if treated correctly.    If you do NOT want to predilute Silica, then it should be added to the reservoir first, before the base nutrient and other additives – like many other brands. The problem with this is it increases the water’s pH – subsequent addition of pH sensitive elements will be potentially destabilized unless pH is quickly corrected. By adding Silica last, we only need to worry about pH right at the end.  If you add it first, you need to worry about pH the whole way through!
Should I use an air-stone?
Generally no.  Claimed growth benefits from “super- oxygenated” nutrient have nil scientific merit.  For run-to-waste systems (soil and coco) an air-stone is not required and should be avoided as they can cause adverse reactions with organic additives and destabilize pH, especially if too much air is being injected.  If batches are being stored for more than a few days, Pythoff PLUS or System Maintenance should be used to prevent any build-ups in the reservoir especially if any light is able to enter.  Also, cover the reservoir, however, ensure the lid is raised to allow airflow – this will prevent the growth of mould on the hard surfaces inside the reservoir.

For recirculating systems, air-stones can be beneficial especially if the dump frequency is infrequent, however as mentioned above, minimize the air injection rate if using organics. This does not apply to DWC – the nutrient solution must be aerated.

Can I use chlorine or hydrogen peroxide with FloraMax?
No, Pythoff PLUS or System Maintenance should be used instead.  Growers must be made aware that many of the FloraMax products contain essential “purified extracted organics”. These appear more-or-less identical to synthetics or salts, and lack the typical characteristics of organic additive e.g. sludgy, sticky and stinky. The trouble is, grower’s can unwittingly assume FloraMax is a “synthetic-line” and employ chlorines or peroxide – which can destroy the organics!

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MSDS (Safety Data Sheets)

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FloraMax product labels

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Pythoff PLUS

Prevents build-...
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Growth-XS assis...
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FloraMax Veg-1

Veg-1 is a fert...
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FloraMax VegaFlora A

VegaFlora A+B i...
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FloraMax VegaFlora B

VegaFlora A+B i...
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FloraMax OrganaBud

OrganaBud is a ...
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FloraMax Root-X...
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Resin-XS is a s...
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FloraMax Ca-Mg-Fe

FloraMax Ca-Mg-...
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FloraMax Silica

FloraMax Silica...
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FloraMax Clone Spray

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FloraMax Cloner

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