As i said in the last post some pictures were due, so hear they are all be it a little later than promised. The guitar is a Gordon Smith and it's there for perspective plus it looks nice as well, also in these pictures you can see the 125w Envirolight with an impromptu stand made from Dictionaries, the ducting is usually propped up near the under lighting to move what little heat is put out away from the leaves, you'll also notice the flowers are really starting to show now too, Hopeyoulike.

To add a note; the run off from the plants was tested two days ago and went from 1.7 EC through to 2.0 one by one, I was happy with this as it's apparently a good indicator of no build ups of salt and what not, the fact that we have flushed the plants (every time we re-potted and changed the strength of the feed) with ordinary tap water left out for at least 24hrs may have helped, we have good water here with an EC of 0.1 and a pH between 7.1 and 7.4 (Soft) so who knows it may have helped keep the balance a little better, I say this as I've heard different things about flushing while vegging but for me; no harm done.

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I found this and if you're anything like me and want to know the ins and outs of everything then you should find this useful. Enjoy

What are Macro-/Micro-Nutrients, and what is each responsible for?


Summary of Macronutrients

Macronutrients are the elements most vital to all plant-life. There are three major and most prominent macronutrients: Nitrogen (“N”), Phosphorus (“P”), and Potassium (“K”). All fertilizers contain these three fundamental elements, but in varying amounts, depending on fertilizer type/brand. The N-P-K ratio of the fertilizer will be listed on the side of the container/box in the form of three numbers separated by hyphens (e.g. 20-20-20, etc.); choose a fertilizer that correlates with your specific needs and stage of plant-growth. TIP: In their vegetative state, cannabis plants thrive primarily on “N” and “P”; and in their flowering-stage, “P” and “K” become more essential.


Summary of Micronutrients

Along with the basic macronutrients, plants also require micronutrients (or Trace-Elements) for sustained health and vigor. Some of these trace-elements are Calcium (“Ca”), Magnesium (“Mg”), Sulfur (“S”), Manganese (“Mn”), Boron (“B”), Zinc (“Zn”), and Copper (“Cu”). They are present in most, if not all, fertilizers, but in generally lesser portions than the major macronutrients.


Below is a list of the basic macronutrients and micronutrients/trace-elements, along with the horticultural-benefits and deficiency-symptoms of each:


Element Name: Nitrogen

Symbol: N

Atomic Number: 7

Atomic Mass: 14.00674

Horticultural-Benefit: Nitrogen promotes photosynthesis, and is directly responsible for the production of chlorophyll. It stimulates leaf and stem growth, and aids the overall size and vigor of the plants.

Deficiency-Symptoms: A nitrogen-deficiency can be recognized by reduced growth-rates and yellowing of the leaves (starting with the older/lower leaves). Colder soil-temperatures make nitrogen less-available to plants.


Element Name: Phosphorus

Symbol: P

Atomic Number: 15

Atomic Mass: 30.973762

Horticultural-Benefit: Phosphorus aids in the germination of seeds, and the growth of seedlings and roots. It is also vital the production of terpene resins, floral clusters, and necessary sugars and starches. Phosphorus also influences overall vigor.

Deficiency-Symptoms: A phosphorus-deficiency can be noted by reduced growth-rates and the production of smaller leaves which wilt/drop quickly. The leaves will be a dull, bluish-green, which will turn purplish or bronzy, and will have seared edges. Excessive “P”-levels can initiate a potassium-deficiency.


Element Name: Potassium

Symbol: K

Atomic Number: 19

Atomic Mass: 39.0983

Horticultural-Benefit: Potassium is important to your plants for metabolic changes during flowering, and the production of floral clusters. It also promotes general plant-vigor, disease-resistance, and sturdy growth.

Deficiency-Symptoms: A potassium-deficiency will retard growth-rates, and cause leaf-tips and -edges to become a scorched-brown color, with curled margins.


Element Name: Calcium

Symbol: Ca

Atomic Number: 20

Atomic Mass: 40.078

Horticultural-Benefit: Calcium is a key ingredient in cell-walls. It strengthens stems/stalks/branches, and also contributes to root-development/growth, primarily that of the rot-tips.

Deficiency-Symptoms: A calcium-deficiency can be recognized by distorted leaves, with hooked tips and curled margins. A deficiency would also result in under-developed roots, with weak root-tips.


Element Name: Magnesium

Symbol: Mg

Atomic Number: 12

Atomic Mass: 24.3050

Horticultural-Benefit: Magnesium is significant for chlorophyll-production and most enzyme reactions. It is responsible for healthy leaf-structure and -production, as well as sustaining healthy vein-structure in the leaves.

Deficiency-Symptoms: A magnesium-deficiency will affect various plant-species differently. The most common symptoms in cannabis plants are a vivid yellowing of the leaves, followed by leaves falling without withering, starting with the older/lower leaves. Excessive “Mg”-levels may initiate a calcium-deficiency.


Element Name: Sulfur

Symbol: S

Atomic Number: 16

Atomic Mass: 32.066

Horticultural-Benefit: Sulfur, being an ingredient in plant-protiens, is vital for protein-production, chlorophyll-production and vegetative growth.

Deficiency-Symptoms: A sulfur-deficiency can be identified by retarded growth-rates, accompanied by small, mutated leaves which are round in shape and roll upwards. Leaves will become stiff and brittle, and will fall off. A “S”-deficiency will also cause flowers on the top of kholas to die.


Element Name: Manganese

Symbol: Mn

Atomic Number: 25

Atomic Mass: 54.93805

Horticultural-Benefit: Manganese is a catalyst for many enzymes, and also aids photosynthesis/ chlorophyll-production.

Deficiency-Symptoms: A manganese-deficiency will have varying symptoms, depending on plant-species. The most common symptoms in cannabis plants are a yellowing of chloroplasts while stems remain relatively green. White or grey specks/spots may develop on the surfaces of leaves. As is usually the case, older/lower leaves will be affected first. Excessive “Mn”-levels may cause an “Fe”(iron)-deficiency, which will exhibit symptoms similar to a “Mn”-deficiency.


Element Name: Boron

Symbol: B

Atomic Number: 5

Atomic Mass: 10.811

Horticultural-Benefit: Boron aids the movement of necessary sugars, as well as reproduction, and water intake by cells. It also assists in the production of stems/stalks/branches, and keeps calcium in a soluble form. Furthermore, “B” contributes to leaf-production/-coloring/and -structure.
Deficiency-Symptoms: A boron-deficiency can be recognized by distorted and/or dead growing tips, hollow stems, and malformed fruits/flowers. Plants suffering from a “B”-deficiency frequently exhibit scorched, curled leaves, which are often spotted and discolored; young/vegetative leaves are affected first. Excessive “B”-levels may cause plants to exhibit symptoms similar to those of “Mg”-/”K”-deficiencies.


Element Name: Zinc

Symbol: Zn

Atomic Number: 30

Atomic Mass: 65.39

Horticultural-Benefit: Zinc-levels directly affect plant-size and -maturation , as it is necessary for the production of plant-proteins. Consequently, “Zn” is vital to the production of leaves and stalks/stems/branches.

Deficiency-Symptoms: A deficiency of zinc will result in the yellowing of chloroplasts between leaf-veins, usually with purplish spots of dead cells on leaf-surfaces; older/lower leaves are the first to show symptoms. Vegetative-growth is retarded and deformed, and floral-growth is reduced. Excessive “Zn”-levels can initiate an “Fe”(iron)-deficiency.


Element Name: Copper

Symbol: Cu

Atomic Number: 29

Atomic Mass: 63.546

Horticultural-Benefit: Copper is responsible for healthy, vigorous growth, and strengthens stalks/stem/branches. It is also necessary for the production of plant-proteins, and is crucial for reproduction.

Deficiency-Symptoms: A copper-deficiency can cause otherwise green leaves to adopt a bluish hue. Vegetative growth may fail to unfold, and may be yellow at the tips and edges.
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OK, added the PK 13/14 into the feed as we're into the 3rd week of flowering now and what I'll probably do is add this for about 4-6 days depending on how they seem to react to it. I'm doing to post fresh pictures soon as I've just rotated them and they seem to look more and more like the plants I'd hoped they'd be. Laters.

As I said previously I've added PK 13/14 to the feed and these are the most current shots, I think they've maxed out in terms of growth now and it looks likes it's all go!

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Took some photos with my camera and not my phone so the quality should be greatly improved, these are a couple of days old now so I'll be posting new ones once or twice a week to show the monumental flower development.

Laters

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O.K., these are the latest pictures and they give a good idea of the actual size of these plants, they're in the bath tub because they were being flushed with pH 5.8 water as they appeared to have a magnesium deficiency and more recently some mild Nutrient burn, this was probably from going a bit to long with the P/K 13/14 and the fact they haven't had a good flush for ages, they're going o be getting done every 2 weeks from now on as the EC on the run-off pre flush was a whopping 4.0!

Anyhow enjoy the photos.

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Some nice buds taking shape in here!

The light is as high as it can go now so fortunately most of the upward growth seems to have ceased, some more P/K 13/14 to go in the feed soon after a check of the EC of the run off and a possible flush.

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O.K. it's been a while but we're well and truly done, the lack of posts lately has been due to the fact I've been a bit busy but in reality I think I could've been too stoned and lazy, the results are 15oz of really fine Isis and I shall post some pictures and more information within the next 2 days.

Gigadee

how was the smoke on this, any chance of a report?