Grow Tips for LED Grow Lights 2019

Use your G8LED grow lights properly for optimum growth and maximum yields. Some common mistakes growers make with LEDs are not having enough light and not placing the light at the proper distance. If you do not provide enough light, your plants will not grow to their full potential. Similarly, incorrect light placement will also not allow plants to grow to their full potential. Placing a light too close will stunt growth, too far will cause stretching. Follow the recommended coverage areas listed on the Details Page of each light for optimal light penetration and coverage. There are many variables to indoor growing with lighting being one of the most critical ones.

How far should LED Grow Lights be from Plants?

LED Grow Light Distance

As your plants grow and reach for the light, raise the light to keep the distance between the plants and light fairly constant. To grow plants taller, continue raising the light as the plants grow. The plants will reach and stretch towards the coveted light source. Stop raising the light when you do not want more length or when flowering. For shorter, bushier plants decrease the distance. If you keep the distance fixed, the plants will find an equilibrium height and grow wider and denser. If the light is too close to the plants it will stunt growth and create discoloring. Follow the recommended distances and adjust as necessary. The distance can be kept constant during flowering. The 90 Watt Red Flower Booster is added at the same level as the Veg/Flower lights when the light cycle is reduced to 12 hours per day for flowering.

G8-240: 12-24inches     G8-450: 14-30inches 

G8-600: 16-36inches     G8-900: 16-36inches

G8LED Flower Booster: 12-36inches

How Close Should LED Grow Light be to Seedlings?

The lights can be placed closer when growing from seeds. Hang the G8LED lights at the lower end of the distance ranges provided above. Once the seedling sprout and break ground, the light can be raised near the middle or higher end of the range. The G8LED lights will not burn your seedlings. However, if the light is too close to the new growth, it can discolor the leaves. In this case raise your lights and let the plants adjust to the new distance. 

When Should I Give Nutrients to Plants?

G8LED grow lights allow the plants to photosynthesize and grow more efficiently than white LED lights or HPS lights. Avoid feeding plants that are less than 1 month. Do not give nutrients to plants (rooted clones or seedlings) until they develop 3-4 sets of new leaves. f you give nutrients to your plants, reduce feeding by 30% when growing with LED grow lights.

During the vegetative stage, plants require more nitrogen and potassium. During the flowering stage, plants require less nitrogen and more phosphorus and potassium.

How Often Should I Water My Plants?

G8LED grow lights give off only 10% of the heat that an HID bulb emits such as metal halide (MH) or high-pressure sodium (HPS). The lower heat output also means there will be less water evaporation and less need for watering. If growing in soil, water your plants on when the top half inch of soil is dry (every 2-4 days) to avoid root rotting.

What Temperature Should My Grow Room Be?

G8LEDs have a lower heat output. It is easier to regulate grow room temperatures and the temperature immediately below the light. Ambient room temperature should be below 90 degrees Fahrenheit (ideally 82-85 degrees) and as low as 72 degrees when the lights are on. Temperatures will be lower during the off period when the lights are not in use.

How Much Rest Time Do Plants Need?

Although G8LED grow lights can be operated for 24hours per day, it is better to run the lights for 16-20 hours per day and give the plants time to rest.  Plants need dark time to more effectively photosynthesize light energy during the light hours. Minimize working on the plants during the off cycle and reduce light intrusion into the grow area during the rest time.

Vegetative Growth with LED Grow Lights

During the vegetative stage is when you will start to reap the benefits of your LED grow lights. During this period you will save on your electricity bills and get superior growing results if you properly follow the general tips listed in this section. In the vegetative stage, plants will start to show a healthy, deep green color.

Vegetative growth is maintained with 16-18 hours of light per day. You can even keep the plants under 24 hours of light and they will continue to grow at this stage. However, the recommended growth cycle is 18 hours of light during the vegetative growth stage. This light cycle will create an environment that mimics the photoperiod of summertime with long days. It is during the vegetative growth stage that cloning, transplanting, pruning, and bending are all initiated.

After four to eight weeks of vegetative growth, the plants will start the flowering phase. Pre-flowers are the first indication that the plant is ready to move into the next stage of growth. The pre-flowers grow at branch internodes, behind the leaf spur. Pre-flowers are an indication that the plants are ready to go into the flowering stage. You can continue to grow in the vegetative growth stage to get larger plants or switch to flowering at this point. The pre-flower looks like a regular female flower with white fuzzy pistils. The pre-flowering can take from one to two weeks. When ready for flowering, change the light cycle to 12 hours of light per day and add Flower Boosters.

Flowering with LED Grow Lights

Indoor grow lights can mimic the photoperiod of the seasons by the number of hours per day they are on. For flowering,  the light cycle will reduce from 18 hours to 12 hours per day. Give your plants 12 hours of uninterrupted darkness and 12 hours of light to induce visible signs of flowering in two weeks or less. Increased light in the red and far-red spectra of the visible portion of light, at the correct density and PAR metric, will increase flowering size and yield. Add G8LED  Flower Boosters at this stage for more robust flowering.

Flowering can last eight weeks or longer. During flowering, growth patterns and chemical changes in the plants become apparent. Stems elongate, leaves grow progressively fewer blades, and flower formation is rapid at first then slows. Phosphorus and potassium uptake increase to promote floral formation. Your nutrients should have less nitrogen and more potassium and phosphorus during flowering. Avoid feeding too often as this can cause your plant to get nutrient burned. Use 30% fewer nutrients with LED flowering grow lights as compared to MH/HPS systems. Do not overwater the plants and do not harvest too early.

How to Clone from Mother Plants

Making clones or cuttings from a mother plant is an excellent way to propagate plants. Any plant can be cloned, regardless of age or growth stage.  However, female mother plants in the vegetative stage of growth are the ideal choice for cloning. If the mother plant is in the flowering stage, the clones will require several weeks to revert to vegetative growth.  Proper usage of LED grow lights will multiply the number of plants you have in a methodical and environmentally friendly way. Mother plants should be at least two months old and should get 18 hours of light per day. Clones can be grown with any G8LED Veg/Flower grow light for 18 hours per day.  The G8LED 240 Watt Veg/Flower and G8LED 450 Watt Veg/Flower lights are excellent for growing clones. The cloned plants can be as close at 12-18 inches from these lights.

 

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