hydroponic weed feeding schedule

Easy Nutrients: General Hydroponics Flora Trio Guide

For many cannabis growers, nutrients can be a pretty confusing topic. Not only are there tons of companies to wade through, but some companies have multiple nutrient lines, extra supplements, additives, etc. And once you’re through with that, you still have to figure out how much and how often to feed your plants.

Luckily, many of the major nutrient lines out today will grow great cannabis. However, some can empty your wallet and leave you with much more work than is needed.

Today, I’m going to show you the nutrients we use – General Hydroponics Flora Trio + (optionally) CaliMagic – and how we use them. This is one of the simplest and easiest ways to do plant nutrients while keeping the cost low. If you’ve been stuck at figuring out how to feed your plants, this is the answer!

Buds grown using the Flora trio

Important: Flora trio is a great nutrient system, but as long as your plant gets all necessary nutrients, the genetics, care, and growing environment affect bud quality more than the particular nutrient brand.

What Is General Hydroponics Flora Trio

Note: Don’t let the name fool you, the Flora Trio is great for soil, coco coir, hydro, or almost any growing medium!

General Hydroponics is the name of a company that makes nutrients, potting mixes, and pH adjustment kits among many other things. They also produce a nutrient line called the Flora Trio and a supplement called CaliMagic.

The Flora Trio is three bottles (Grow, Micro and Bloom) which are combined in different ratios depending on your plant’s stage of maturity. CaliMagic is a Cal-Mag supplement, which supports optimal cannabis growth and prevents calcium deficiencies (most common when growing in coco or using filtered water).

General Hydroponics (like most if not all nutrient companies) try to sell their base nutrients with a bunch of other supplements, but using just the Flora trio’s three bottles (and optionally CaliMagic) will do everything you need in addition to saving money. We’re going to show you how to do it!

Why We Recommend GH Flora
Let me start off by saying we have no stake of any sort in General Hydroponics. We don’t get paid by them or their companies or receive free products or anything like that. We just think they just make awesome stuff. Now, on to why we recommend you give them a try if you haven’t already found a suitable nutrient line:

GH Flora Trio tends to go for about $10-$14 per 32oz bottle, which comes out to $30-$42 for all three plus $20 for (optional) CaliMagic supplement. That doesn’t seem cheap until you factor in two things: you only use a small amount at a time, and the expiration date on the bottles is pretty far off. For a small personal garden, about $50 worth of nutrients can last for years. Just as importantly, the nutrients last for years even when opened as long as they’re properly stored.

It Works!
Many growers believe that the secret to getting medical-grade bud with the ‘magazine look’ is having the right nutrients. Believe it or not, all nutrient lines perform the same job: providing the basic elements your plant needs. The ways different nutrient lines provide these minerals can differ and the formulas they use can vary vastly, but these changes aren’t what makes that envy-inspiring bud…it’s the care, a good environment, and a lot of light! With that in mind, the Flora Trio works exactly like it should in that it just gives your plants the minerals they need.

If you ignore the extra add-ons frequently sold with the Flora Trio, it becomes a simple, long-lasting solution to a seemingly complicated problem. The simplicity of the formula they use (dissolved salts) makes it last 5+ years after being opened when stored correctly, and only using three bottles makes it simpler to use than a full nutrient and supplement line.

Widely Available

The Flora trio is one of the most common nutrient lines made for plants like cannabis and is easily found online and at hydro stores.

Buds grown with Flora trio

Alright, now let’s get to how to actually use the stuff!

How WE Use GH Flora Trio For Cannabis (Custom Schedule)
Here’s a chart demonstrating how we use the Flora Trio in drain-to-waste mediums like coco coir/perlite, vermiculite/perlite etc.:

  1. Add nutrients/supplements to water (Micro first)
  2. Adust pH to between 5.5-6.5 (using PH Up or PH Down)
  3. Give water to plants and remove runoff
  4. Adjust nutrient strength as needed…
    – Increase nutrients for pale plants with yellow lower leaves
    – Reduce nutrients for dark plants with nutrient burn
  • Repeat Week 3 until plant is half final desired height
  • Initiate flowering stage with a 12/12 light schedule
  • Repeat Week 8 for a longer flowering stage
  • Always add CaliMagic for coco coir or RO water

Soil plants (autoflowering) grown with Flora trio

Coco plants grown with Flora trio + CaliMagic

Recirculating Nutrient Schedule for Hydroponics/DWC

And here’s a chart demonstrating how we use the Flora Trio in recirculating systems like DWC/Bubbleponic, Ebb & Flow, etc.:

  1. Add nutrients/supplements to water (Micro first)
  2. Adust pH to between 5.5-6.5 (using PH Up or PH Down)
  3. Add nutrient water to the reservoir (leave 1″ air gap below net pots)
  4. Adjust nutrient strength as needed…
    – Increase dosage for pale plants with yellow lower leaves
    – Lower dosage for dark plants with nutrient burn
  • Repeat Week 3 until plant is half final desired height
  • Initiate flowering stage with a 12/12 light schedule
  • Repeat Week 8 for a longer flowering stage

Hydroponic cannabis grows with Flora trio + CaliMagic

We recommend starting with the amounts listed above. If your plant shows signs of deficiencies, check the pH first as this is just as likely the issue.

If you’ve confirmed your pH is in the correct range and you’re still seeing nutrient deficiencies, increase the amount of nutrients you’re giving your plants. Make sure to treat the amount recommended by General Hydroponics (see below) as an absolute maximum; giving full strength tends to end in nutrient burn.

Those using coco coir and/or reverse osmosis water will want to add a calcium/magnesium (cal-mag) supplement to make up for the lack of it in your water. Growers using tap water often have enough calcium/magnesium in their water already, but it’s a good idea to add it if you know you live in an area with soft (more pure) water.

As far as other supplements, you’ll see that the charts below from GH recommend a few of them. While we’re sure they have their merits, we don’t recommend using any of the ones listed unless you’ve tried this line already and want to experiment. From our experience, we’re sure you’ll get the results you’re looking for without having to add even more bottles to your nutrient line-up.

Now for the standard instructions!

How GH Tells You to Use It (with lots of supplements)​
Here’s the chart from General Hydroponics for mediums like coco coir, soil, perlite, etc.:

And here’s their chart for recirculating systems like DWC, Ebb & Flow, etc.:

Personally, we’ve found the extra supplements and higher levels of nutrients recommended by General Hydroponics to be unnecessary. We get great results using the more simple and cannabis-specific nutrient levels recommended by our custom schedule!

Tips for Using the Flora Trio
Here are a few tips about this nutrient line that’ll save you some time and money!

  • You can make nutrient water in advance and store it for up to a week. Some people store nutrient water for longer, but a single week is considered safe by General Hydroponics. Nutrient water lasts longer if the container is completely full (since there is no oxygen for bad microorganisms). After a container is part empty, the water can get smelly if you seal it back up. Leave the top off in that case to get a little extra time.
  • Store your nutrient bottles in a darkened area (no direct sunlight) with cool (but not freezing) temperatures. When stored properly, these nutrients can last for over 5 years even after they’ve been opened
  • Try using a pipette to get Flora Micro out of the bottle. This way you avoid having to pour it, which can be a pain. Micro has a weird drippy consistency that makes it easy to spill while pouring. Another idea is to put Micro in a squeeze bottle.
  • Using small amounts of nutrients not only makes it so you save a bit of money, but it makes your nutrient-water a lighter color. This in turn makes it easier to use drop-type pH test kits which are super cheap! A drop-type pH test kit can also last years when stored and used properly!
  • I know it sounds like a no-brainer, but make sure you put down a towel before your pour nutrients! Two of the liquids are pretty tame, but Micro is wine-colored with an odd consistency!

Easy Nutrients: General Hydroponics Flora Trio Guide For many cannabis growers, nutrients can be a pretty confusing topic. Not only are there tons of companies to wade through, but some companies

General Hydroponics Flora Series Feed Chart

Inicio » News » General Hydroponics Flora Series Feed Chart

  • Escrito por : Ciara
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GHE (General Hydroponics of Europe) is a company that has been selling high-end fertilizers and additives for over 25 years now. In fact, the General Hydroponics Flora Series chart is perfect for those looking to make the absolute most out of your plants when growing hydroponically. Despite their name, most of their products can be safely used in soil and coco, too.

In this post we’re going to take a closer look at their Flora Series chart, which can be used in soil, coco, aero and hydroponics. You also have the choice of sticking with the basic nutrients or using extra additives with their basic and expert charts.

General Hydroponics Flora Series

GHE’s “Flora Series” range consists of three base nutrients for your cannabis plants; FloraMicro, FloraGro and FloraBloom. These three products contain all of the necessary ingredients in order to grow your cannabis plants from start to finish successfully. However, GHE allows you to use additives alongside them in the “expert” version of their Flora Series feed chart. All of these products can be used in hydroponic, aeroponic, soil and coco media.

Base Nutrients


This is General Hydroponics best, by far, base fertilizer. It contains all of the nutrients that your plants one hundred percent need to survive. It has the perfect NPK combination, 3-1-6, which makes for an incredibly successful growth period. When used alongside the other two Flora base nutrients, you’re guaranteed the best possible results.


This product is used alongside Gro and Bloom during the entire process. This is because it contains micro-elements and essential oligo-elements that help to keep the pH in your nutrient solution perfectly stable. It also comes in two versions, one for soft water and another for hard water, allowing you to give your plants a somewhat personalized treatment depending on the water used.


This product is the flowering version of FloraGro, and it’s designed to improve your plants’ flowering period. It’s generally used alongside FloraGro and FloraMicro from the start, although you’ll need to begin increasing the dose of FloraBloom once your plants begin to flower. It has a higher PK than the other two as phosphorus and potassium are two of the most needed nutrients during the flowering period.


GHE’s additives aren’t fully necessary to grow cannabis, although they can help you to get the absolute best possible results from your plants; they’ll grow much larger, stronger and more potent. Follow the expert section of the General Hydroponics Flora Series feed chart in order to grow professional cannabis plants.

Pro Roots

This additive is used to stimulate your plants’ root system. You’ll be able to entice intense root growth, which therefore causes your plants to grow too. It’s also used to fortify, strengthen and protect your roots, which are the most important part of your plants. Your plants will grow too, as the roots are simply a reflection of the upper part of the plant; the more they grow, the more your plant should grow.

Pro Bloom

This organic stimulant by GHE can, although it’s called Bloom, be used during the growth period too. Essentially, what it does is stimulate your plants’ hormones which helps to speed up a lot of internal processes. This basically means that your plants grow non-stop, and they’ll also need more nutrients or else they may begin showing deficiencies. Don’t worry though; General Hydroponics Flora Series’ chart compensates for this, increasing nutrient doses when needed.

Diamond Nectar

This product is designed to give your plants a boost during the growth period, making for a stronger structure when it comes time to flower. They’ll be able to hold up heftier, thicker buds thanks to its leonardite and fulvic acid. These two ingredients also increase the amount of nutrients that your plants can absorb. You don’t need to use Diamond Nectar during the flowering period due to the fact that it acts almost immediately when used.

Mineral Magic/Silicate

Silicate by GHE, previously known as Mineral Magic, is an additive rich in silicates that increase branch thickness and strength in cannabis plants. It also increases microbiological life in their substrate, which makes for a great mini ecosystem that your plants can benefit from. It also adjusts pH and EC in your nutrient solution, which makes sure that your plants can absorb as many nutrients as possible.


Ripen is designed to fatten up your buds; it’s used towards the end of the flowering period, which is known as the fattening or ripening period. It’s perfect for hydroponic systems, which tend to naturally produce less terpenes than plants grown in soil due to the fact that they are constantly hydrated. Ripen allows you to naturally fatten buds and increase terpene count, which therefore increases aroma and flavor. This product can be used in both hydroponic and soil grows.


This is one of the most important products when it comes to this chart, as it’s used during the last two weeks of the flowering period to flush out your plants roots. This is done so that they don’t end up tasting strange due to leftover salts or minerals. It cleans out your plants and the substrate over a couple of weeks. If you don’t flush your plants, you may end up with some strange-tasting weed.

If you want to have a closer look at General Hydroponics Flora Series’ products, click the green button below; we have full descriptions and instructions on how to use each product, as well as offers on all products and the best prices around.

General Hydroponics Flora Series | Feed Chart

The General Hydroponics Flora Series chart comes in two sections; basic and expert. The basic chart includes the three base Flora nutrients (Gro, Micro and Bloom), Ripen for the fattening period and FloraKleen for flushing the roots. The expert chart adds four additives to the mix for even better results. Remember to use both the basic and expert products when following the expert chart.

Some of the fertilizers and additives on this list can adjust the pH in your nutrient solution automatically, although we recommend keeping an eye on it just in case. These charts are to be followed under the assumption that you’re using distilled or filtered water, or water incredibly low in minerals. It also indicates the appropriate EC levels for each phase and dose.

Each chart is divided into plant phase rather than weeks. This is done so that anyone can follow it, whether you’re growing a fast indica strain indoors or an outdoor sativa that takes 14 weeks to flower. Keep in mind that these charts are a simple guide; you should always react accordingly to your plants health. There’s no point in following the chart if you’ve accidentally over-fertilized your plants, as they won’t be able to absorb any more nutrients. Depending on your experience, the climate you’re growing in and the strain you’re growing, you may obtain different results or need to adjust doses.

Follow the General hydroponics Flora Series feed chart this year for some amazing results! Amazing flowers in hydroponics, soil and coco thanks to GHE!