Questions about hydroponics? You are not alone.

  • Purpinator® may be used on all plants on all plants, but will perform best on plants that express purple pigmentation 

  • If you are using a hydroponics reservoir system, it’s best to clean the reservoir as frequently as once every 3 to 5 days with a critical cleaning solution and to closely monitor for film developed along the surface. Critically clean reservoir systems are recommended

  • No, Purpinator® was designed to be fed as a root drench with water and is not to be sprayed onto the leaves of the plant 

  • Purpinator® can be used all of the way through your flush and will not leave chemical residues when used as directed

  • We recommend using Purpinator® in the vegetative phase to provide a stockpile of available compounds for use in flowering. If you are using Purpinator® for flowering only, start adding Purpinator® at the first signs of flowering site development or when you change light cycles 

  • Yes, but it is not necessary. Purpinator® has the same terpene and trichome benefits as Terpinator®, with the added benefit of improving purple coloration in genetically capable strains. Use Purpinator® for purple plants, Terpinator® for everything else

  • No, Terpinator® is not organic

  • No, Terpinator® does not contain these inputs. Triacontanol supplements can be used alongside Terpinator® if they are part of your feed regimen.

  • Terpinator does not contain Plant Growth Regulators (PGRs).

  • Terpinator® will remain stable for two years when sealed and stored in a cool, dry place away from direct sunlight. We recommend using Terpinator® within one year of opening. Do not store in areas with average temperatures below 40 degrees Fahrenheit. Do not freeze. 

  • No, Terpinator® is pH neutral.

  • Properly stored (cool environment, out of sunlight, sealed container) they should last indefinitely.

  • Properly stored (cool environment, out of sunlight, sealed container) the FloraNova series should last up to one year without any problems.

  • Either way will work. If you are using a nutrient for the first time and are not familiar with how it is going to affect your pH, you should mix your nutrient first. Let the solution sit for about 15 – 20 minutes and then check the pH and adjust accordingly. Keep track of how much pH Up or Down you add to the solution. Typically pH Up will be required if you are using Reverse Osmosis filtered water. If you are using unfiltered municipal water or well water with a pH of 7.5 or above, you might need to use a small amount of pH Down or possibly none at all. Once you know how much pH adjusting solution you use in your reservoir, you can add it first of you like. Remember that temperature affects pH so make sure your water temperature is consistent when mixing your nutrient solution.

    pH Dyanmics
  • Our Feedchart Usage Guide explains how to interpret and use General Hydroponics® Pro Feedcharts. It is intended as a companion piece to General Hydroponics® Pro feedcharts for FloraPro®, FloraSeries®, Cocotek® and Maxi Series™.

  • Each set of feed charts illustrates Aggressive, Medium, and Light Feeding recipes.  (For most modern production systems, we recommend the Medium Feed strength).

    Aggressive Feed: Best for larger, multi-topped plants, where planting density is low and crops are irrigated less frequently.  Plant density 0.25-4 per 16 sq ft

    Medium Feed: Suitable for most modern production systems. Best for medium-sized plants and medium planting density, where crops are irrigated frequently. Plant density 4 -10 per 16 sq ft

    Light Feed: Best for smaller plants, grown in high-density layouts and using pulse feed or very high frequency, low-volume irrigation events.  Plant density 11- 20 per 16 sq ft

  • Each feed chart download includes two versions — Weekly & Growth Phase — and you can choose either version based on your needs.  

    Weekly Feed Chart: The weekly version divides each fertilizer recipe by week from the Seedling/Cuttings stage through Harvest. 

    Growth Phase Feed Chart: The Growth Stage versions include fewer recipes geared toward key growth stages, and are intended for large-scale commercial operators who require simplified fertilizer recipe counts for complex fertigation systems.

  • 3-Part Feed Chart: Our 3-Part programs use only the base nutrients in FloraSeries®: FloraGro®, FloraBloom®, and FloraMicro®. This program is perfect for growers who want to keep it simple, whether they are a large commercial grower trying to simplify their operation, or a first time hobbyist just trying to get their bearings.  

    6-Part Feed Chart: The 6-Part feed charts include six total products: the three base nutrients in FloraSeries®, plus three additional liquid fertilizers supplements: CaliMAGic™, Liquid Koolbloom®, Floralicious® Plus.  

    • CALiMAGic™ is a concentrated blend of readily available calcium and magnesium, assists fast growing plants by preventing secondary nutrient deficiencies. 
    • Liquid Koolbloom® is formulated to provide a boost to the nutrients necessary for maximum floral yields. 
    • Floralicious® Plus contains essential plant nutrients that are known to encourage essential oil production and improve plant vigor. 

    10-Part Feed Chart: Our custom performance plan includes ten total products: the six products in the Pro Performance charts, plus four additional supplements — used individually or together — to fine tune your recipe to address any remaining challenges with your plants and their growing environment.  

    • ArmorSi™ adds Silica to strengthen and help protect plants from stressful conditions.
    • Rapidstart™ is a proprietary blend of plant nutrients to promote superior root growth and development.  
    • Ripen® contains essential plant nutrients needed for flower maturation to support abundant flowering, with greater oil and fragrance production,
    • FloraKleen® helps flush out accumulated salts from the rootzone.
  • It is a common unit for measuring the concentration of elements in the nutrient solution. One ppm is one part by weight of the mineral in one million parts of solution.

    TDS, EC, PPM, etc
  • If you have plant nutrient recommendations in EC units, an EC meter is convenient. If your plant nutrient recommendations are in ppm values, a sodium chloride TDS calibration is easier to use.

    TDS, EC, PPM, etc
  • In a properly functioning hydroponic unit, the roots receive oxygen from the air, which surrounds them, as well as from the oxygen, which is dissolved in the nutrient solution. The proper medium can play an important role in this process.

  • Conductivity is really a measure of the nutrients in the solution. Low conductivity implies a low nutrient concentration, which usually results in nutritional deficiencies and slow growth rates of your plants. One can look at the situation, as a higher conductivity is more food for your plants. However, be careful of very high levels as this can burn and or kill the plant.

    TDS, EC, PPM, etc
  • Conductivity is a measure of the strength of the nutrient solution. The higher the conductivity, the more dissolved solids there are in the solution. Delicate plants, cuttings, and seedlings can experience fertilizer burn if the conductivity is too high. Once the plants begin growing, they need a stronger nutrient solution, so conductivity must be increased by adding concentrated nutrient. Some plants prefer a milder nutrient strength, while others grow better and produce better quality fruit with a higher concentration.

    TDS, EC, PPM, etc
  • To obtain an approximate sodium chloride TDS value, multiply the EC reading (in milliSiemens/cm) by 1000 and divide by 2.

    To get an EC value, multiply the ppm reading by 2 and divide by 1000.

    Thus, if your EC is 1:
    1 * 1000/2= 500 ppm.

    And if your ppm is 500:
    500 * 2/1000= 1 EC

    TDS, EC, PPM, etc