Weekly Hydroponic Feeding Chart

Creating a Schedule for Hydroponic Marijuana Growing

“Hydroponic cannabis” is marijuana grown using a nutrient-rich water solution and an inert medium instead of soil. Growers create a highly controlled system that is carefully monitored. Professional growers often create sophisticated systems that include timers, reservoirs, and pumps; however, a system may be as simple as hand watering cannabis planted in pots filled with an inert medium.

Hydroponic crops are less susceptible to pests and are ideal for drought-prone areas. If you decide to try hydroponics, it is crucial to create the perfect growing environment and then oversee your crop through every stage of growth. Sticking to a growing schedule is critical. It makes it possible to identify and address problems early and ensure the healthiest plants.

Setting Up a Hydroponic Growing System

Many types of hydroponic systems can produce healthy marijuana harvests, and each has its advantages and disadvantages. The experts at Greentrees Hydroponics provide a guide that explains various setups. It is even possible to skip the inert medium altogether and nourish cannabis with just a nutrient-rich water solution. However, every system needs a substrate that will support root growth.

Starter plants from i49 cannabis seeds must have several internodes, and cuttings have to be well-rooted before adding them to your hydroponic system. If you are unsure how to germinate seeds to get them to that point or point or make cuttings, there is a wealth of online information that provides instructions. Check out our i49 germination guide to help eliminate any confusion.

What you will need for a basic hydroponic set-up:

Bergman’s Plant Food

Bubble Buckets

4 x Amnesia Haze

1 x 400 Watt MH for the vegetation phase

1 x 600 Watt MH for the flowering phase

There are environmental specs for every growing phase, and they must be carefully maintained.

Week One: Vegetative Phase

Your system should be running 24 hours a day. It is essential to keep water at the correct temperature. You need to spray plants with water daily. Use a nitrogen-rich fertilizer such as Bergman’s Seedling Fertilizer to keep plants healthy and encourage root growth.

Check pH levels and TDS levels every other day since they change as plants use nutrients. Examine roots to ensure they are healthy. Brown roots signal root rot or a dirty system. At the end of week 1, roots and plants should be about the same length.

Plants will still be small and adjusting to the light. MH (Metal Halide) lamps are ideal light sources since they provide the blue or white part of the spectrum that young cannabis needs.

Week One Vegetative Environment:

Light Amount/ Distance /Duration:  50% of lamps on (400 Watt MH)/40 inches between plant and lamp/18 hours a day

Day/Night Temperature:  73/64 F°

Water temperature:  70 F°

Humidity:  80%

pH level:  5.8

TDS/EC:  650/1.3

Week Two:  Vegetative Phase

Ensure that all lamps are on and that the temperature does not rise above 80 F°. Congratulations for making it this far! Your harlequin cbd or jack herer weed plants should now be mature enough for topping.

Check for brown spots on leaves, which could be a sign of high TDS levels that could lead to nutrient burn. Lower TDS levels to 35% to correct the problem. Monitor water levels and add water if necessary. Strengthen stems by pointing a fan at plants and having it blow over them.

It is time to begin the flowering stage when leaf tips begin touching other plants. If you have a large crop, consider starting the flowering stage after the first week of the vegetative phase. This prevents plants from becoming too large for a single lamp.

Week Two Vegetative Environment:

Light Amount/ Distance /Duration:  100%/20 inches/18 hours a day

Day/Night Temperature:  75/64 F°

Humidity:  80%

pH level: 5.8

TDS/EC: 750/1.5

Week One:  Flowering Phase

To begin the flowering stage , you will change indoor plants’ light from 18 to 12 hours per day, which tricks them into thinking it is fall. That signals them to begin the flowering phase. It can take a while before you notice plant changes caused by the new schedule.

In this phase, feed plants plenty of nitrogen to encourage growth. After three weeks, you will focus on adding phosphorous to promote flower production. Point the fan between the lamp and plants to spread heat rather than concentrating it in one area. Clean the buckets, adjust pH levels as needed, and use fresh water to flush out the system if you are changing nutrients.

Check your strawbery kush or cookie og plants for damage or pests and ensure roots are healthy.

Week One Flowering Environment:

Light Amount/Distance/Duration: 100%/20 inches/12 hours per day

Day/Night Temperature:  77/65 F°

Humidity:  70%

pH level: 5.8

TDS/EC: 850/1.7

Week Two:  Flowering Phase

By this time, plants are growing quickly, and you can begin topping and pruning so plants can devote resources to producing buds.

Measure the distance between lamps and plants often to avoid burning the leaves. According to GreenCultureED, it is also a good idea to check ventilation, look for fungi, and inspect light systems for excessive heat.

If your sativa weed seed plants are getting too tall, you can super crop them. You pinch the stem between your index finger and thumb and then bend it gently to create a sturdier stem.

Week Two Flowering Environment:

Light Amount/Distance/Duration:  100%/20 inches/12 hours per day

Day/Night Temperature:  79/67 F°

Humidity:  70%

pH Level: 5.8

TDS/EC: 950/1.9

Week Three:  Flowering Phase

During this phase, plant growth will slow, and the first flowers appear. Your purple lemon kush plants will need a lot of water now, so check them often. Carefully monitor temperature as well as pH and TDS levels. Make sure water is fresh. Remove any male plants and check for discolored roots or leaves.

At the end of the week, flush out water and wait a day or so before adding nutrients. The waiting period allows plants to use up their remaining nutrients.

Week Three Flowering Environment:

Light Amount/Distance/Duration:  100%/20 inches/12 hours per day

Day/Night Temperature:  79/67 F°

Humidity:  60%

pH level: 5.8

 

TDS/EC: 1050/2.1 (FP Bloom)

 

Week Four:  Flowering Phase

 

At week four, plants will produce lots of buds, and you will smell them. It’s an excellent time to switch to a phosphorous-rich fertilizer. Plants will not grow taller, but bud production will be high. It’s a good time to super crop them.

 

Week Four Flowering Environment:

 

Light Amount/Distance/Duration: 100%/20 inches/12 hours per day

 

Day/Night Temperature:  80 /67 F°

 

Humidity:  50%

 

pH level:  5.5

 

TDS/EC:  1150/2.3

 

Week Five:  Flowering Phase

 

Continue to monitor the environment and keep a close eye on the distance between the tops of plants and lamps. At this stage, cannabis needs a lot of light, so keep lamps as close as possible without burning them. A good rule of thumb is that if your hand is uncomfortable under the lamps, they are too close.

 

Week Five Flowering Environment:

 

Light Amount/Distance/Duration: 100%/20 inches/12 hours per day

 

Day/Night Temperature:  80/67 F°

 

Humidity:  50%

 

pH level:  5.8

 

TDS/EC:  1200/2.4

 

Week Six:  Flowering Phase

 

At this point, cannabis plants are thirsty and can drink as much as a gallon of water per day, so keep buckets filled with water. Plants are also quickly absorbing nutrients and carbon dioxide.

 

Make sure a fan keeps air circulating and be careful to maintain a supply of fresh air.

 

Week Six Flowering Environment:

 

Light Amount/Distance/Duration: 100%/20 inches/12 hours per day

 

Day/Night Temperature:  80/67 F°

 

Humidity:  50%

 

pH level:  5.8

 

TDS/EC:  1250/2.5

 

Week Seven:  Flowering Phase

 

At week seven, buds are getting large, and you will need to provide more potassium. Bergman’s Plant Booster works, and you should also apply other fertilizers made for the flowering stage.

 

By now, you will be able to see THC crystal, which appears as a white layer on leaves near buds. The whiter the layer is, the healthier the plant. The color turns orange as harvest time approaches.

 

Week Seven Flowering Environment:

 

Light Amount/Distance/Duration: 100%/20 inches/12 hours per day

 

Day/Night Temperature:  80/67 F°

 

Humidity:  50%

 

pH level: 5.5

 

TDS/EC: 1300/2.4 (FP Bloom + FP Boost)

 

Week Eight:  Flowering Phase

 

By week eight, buds are continuing to grow but are mostly becoming denser and producing more THC.

 

It is critical to lower the TDS level to allow plants to use up nutrients and make way for a chemical-free, clean harvest.

 

During this phase, it is normal for leaves at the base of plants to turn yellow. However, if you find leaves with discoloration or mold, remove them.

 

Week Eight Flowering Environment:

 

Light Amount/Distance/Duration: 100%/20 inches/12 hours per day

 

Day/Night Temperature:  76/65 F°

 

Humidity:  50%

 

pH level:  5.8

 

TDS/EC:  750/1.5

 

Week Nine:  Flowering Phase

 

At this point, you will significantly lower EC to rid plants of nutrients. Water should have a 5.5 pH level until harvest since that will improve the taste. Look for signs of pests and rot that could destroy your crop.

 

You can harvest plants when the little hairs are 80% brown. The exact time you harvest will depend on your taste.

 

Week Nine Flowering Environment:

 

Light Amount/Distance/Duration: 100%/20 inches/12 hours per day

 

Day/Night Temperature:  75/64 F°

 

Humidity:  50%

 

pH level: 5.5

 

TDS/EC: 0 to 500/0 to 10

 

The Bottom Line

 

Growing marijuana hydroponically allows you to control the environment and is ideal for areas where droughts are frequent. It takes a lot of work and constant maintenance to produce a healthy harvest, but well-tended crops will produce high-quality plants. The key is to create a healthy environment and then adhere to a careful maintenance schedule throughout the vegetative and flowering stages. Start with the best indoor cannabis seeds for growing hydroponically right here at i49.net!

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