Aussie Growers Thread

Hydro4life

Hydro4life

Well-Known Member
Bullygrowz said:
View attachment 4522772
Shes got heeeeps of side branching camera doesnt show how bushy iy is really
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Nice plants bully,
yea looks like a bit of a defol will do it good. I figure your using cool tubes 600w hps/mh?
What I do is observe from this pictures angle with lights on, and Itl give you an indication of your light penetration.
I aim to let light penetrate through 80 to 90% of my canopy. Also keep an eye on the floor, you don’t want to defol to the point that you see the floor lighting up or your not utilising all the lumens from your light that the plant is no longer absorbing.
I Start by removing any big old fans that have very long purple stems. Then reassess.
 
Bullygrowz

Bullygrowz

Well-Known Member
Hydro4life said:
Nice plants bully,
yea looks like a bit of a defol will do it good. I figure your using cool tubes 600w hps/mh?
What I do is observe from this pictures angle with lights on, and Itl give you an indication of your light penetration.
I aim to let light penetrate through 80 to 90% of my canopy. Also keep an eye on the floor, you don’t want to defol to the point that you see the floor lighting up or your not utilising all the lumens from your light that the plant is no longer absorbing.
I Start by removing any big old fans that have very long purple stems. Then reassess.
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Yeah 600 hps in cool tubes + a 315 cmh in the middle. sweet i might give her top half a light defol coz she hasnt stretched much but is bushy as and has heeps of sites that could get uncovered
 
Hydro4life

Hydro4life

Well-Known Member
jzs147 said:
Hope so. If it takes to long ill grow something else.
Was gonna do another in that small tent.
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Have grown wwxbb twice, off memory took around 8.5 to 9 weeks with the exception of a strong big bud pheno that would finish a little earlier. They seemed to mature fast towards end of flower I thought.
I grew a 91 chemdawg after my 2nd run with the wwxbb and found the chemdawg to be better in terms of quality, yield (on par with the big bud pheno) and stability. But took a tad longer to flower.
Better strains out there imo jzs :wink:
 
jzs147

jzs147

Well-Known Member
Hydro4life said:
Have grown wwxbb twice, off memory took around 8.5 to 9 weeks with the exception of a strong big bud pheno that would finish a little earlier. They seemed to mature fast towards end of flower I thought.
I grew a 91 chemdawg after my 2nd run with the wwxbb and found the chemdawg to be better in terms of quality, yield (on par with the big bud pheno) and stability. But took a tad longer to flower.
Better strains out there imo jzs :wink:
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Yeah i just always wanted to grow it mate an nows the time.
Cheers for input.
 
Hydro4life

Hydro4life

Well-Known Member
Well I’ve found a good fast flowering, high yielding, mould resistant outdoor strain for WAs Climate.
White Siberian.
I didn’t get any pics of the big colas I harvested but I left all the smaller popcorn buds on the plant and kept it going for roughly another 2 weeks to densen them up.
They exploded in size and easily doubled their trichs.
The pictures don’t do it justice but very dense and frosty for popcorn bud :blsmoke:
B28DB51F-68D9-4F44-BCFF-8BCF4F729DFD.jpeg5FD62A5C-C0EC-41C8-B2D2-94985E6877AA.jpeg
 
Venus55

Venus55

Well-Known Member
For all the ‘flushing’ fanatics

“There have been a lot of debates on this forum about flushing and there is a lot of misunderstanding about it in general flushing has its place in gardening and in the real world (other than MJ forums) is referred to as leeching.

This will be a long read but I hope it will set the record straight for everyone, this has been posted in several places here but I am putting this post together to clear things up a bit for all of you.


"Advanced - Flushing

A critical look at preharvest flushing

Pre harvest flushing is a controversial topic. Flushing is supposed to improve taste of the final bud by either giving only pure water, clearing solutions or extensive flushing for the last 7-14 days of flowering. While many growers claim a positive effect, others deny any positive influence or even suggest reduced yield and quality.

The theory of pre harvest flushing is to remove nutrients from the grow medium/root zone. A lack of nutrients creates a deficiency, forcing the plant to translocate and use up its internal nutrient compounds.

Nutrient fundamentals and uptake:

A good read about plant nutrition can be found here.

Until recently it was commonly thought that all nutrients are absorbed by plant roots as ions of mineral elements. However in newer studies more and more evidence emerged that additionally plant roots are capable of taking up complex organic molecules like amino acids directly thus bypassing the mineralization process.

The major nutrient uptake processes are:

1) Active transport mechanism into root hairs (the plant has to put energy in it, ATP driven) which is selective to some degree. This is one way the plant (being immobile) can adjust to the environment.

2) Passive transport (diffusion) through symplast to endodermis.

http://www.biol.sc.edu/courses/bio102/f99-3637.html

http://www.hort.wisc.edu/cran/Publications/2001 Proceedings/min_nutr.pdf

The claim only;chemically ferted plants need to be flushed should be taken with a grain of salt. Organic and synthetic ferted plants take up mineral ions alike, probably to a different degree though. Many influences play key roles in the taste and flavor of the final bud, like the nutrition balance and strength throughout the entire life cycle of the plant, the drying and curing process and other environmental conditions.

3) Active transport mechanism of organic molecules into root hairs via endocytosis.

http://acd.ucar.edu/~eholland/encyc6.html

Here is a simplified overview of nutrient functions:

Nitrogen is needed to build chlorophyll, amino acids, and proteins. Phosphorus is necessary for photosynthesis and other growth processes. Potassium is utilized to form sugar and starch and to activate enzymes. Magnesium also plays a role in activating enzymes and is part of chlorophyll. Calcium is used during cell growth and division and is part of the cell wall. Sulfur is part of amino acids and proteins.

Plants also require trace elements, which include boron, chlorine, copper, iron, manganese, sodium, zinc, molybdenum, nickel, cobalt, and silicon.

Copper, iron, and manganese are used in photosynthesis. Molybdenum, nickel, and cobalt are necessary for the movement of nitrogen in the plant. Boron is important for reproduction, while chlorine stimulates root growth and development. Sodium benefits the movement of water within the plant and zinc is neeeded for enzymes and used in auxins (organic plant hormones). Finally, silicon helps to build tough cell walls for better heat and drought tolerance.

http://www.sidwell.edu

You can get an idea from this how closely all the essential elements are involved in the many metabolic processes within the plant, often relying on each other.

Nutrient movement and mobility inside the plant:

Besides endocytosis, there are two major pathways inside the plant, the xylem and the phloem. When water and minerals are absorbed by plant roots, these substances must be transported up to the plant's stems and leaves for photosynthesis and further metabolic processes. This upward transport happens in the xylem. While the xylem is able to transport organic compounds, the phloem is much more adapted to do so.

The organic compounds thus originating in the leaves have to be moved throughout the plant, upwards and downwards, to where they are needed. This transport happens in the phloem. Compounds that are moving through the phloem are mostly:
Sugars as sugary saps, organic nitrogen compounds (amino acids and amides, ureides and legumes), hormones and proteins.

http://www.sirinet.net

Not all nutrient compounds are moveable within the plant.

1) N, P, K, Mg and S are considered mobile: they can move up and down the plant in both xylem and phloem.
Deficiency appears on old leaves first.

2) Ca, Fe, Zn, Mo, B, Cu, Mn are considered immobile: they only move up the plant in the xylem.
Deficiency appears on new leaves first.

http://generalhorticulture.tamu.edu

Storage organelles:

Salts and organic metabolites can be stored in storage organelles. The most important storage organelle is the vacuole, which can contribute up to 90% of the cell volume. The majority of compounds found in the vacuole are sugars, polysaccharides, organic acids and proteins though.

http://jeb.biologists.org.pdf

Translocation:

Now that the basics are explained, we can take a look at the translocation process. It should be already clear that only mobile elements can be translocated through the phloem. Immobile elements cant be translocated and are not more available to the plant for further metabolic processes and new plant growth.

Since flushing (in theory) induces a nutrient deficiency in the rootzone, the translocation process aids in the plants survival. Translocation is transportation of assimilates through the phloem from source (a net exporter of assimilate) to sink (a net importer of assimilate). Sources are mostly mature fan leaves and sinks are mostly apical meristems, lateral meristem, fruit, seed and developing leaves etc.

You can see this by the yellowing and later dying of the mature fan leaves from thesecond day on after flushing started. Developing leaves, bud leaves and calyxes don’t serve as sources, they are sinks. Changes in those plant parts are due to the deficient immobile elements which start to indicate on new growth first.

Unfortunately, several metabolic processes are unable to take place anymore since other elements needed are no longer available (the immobile ones). This includes processeswhere nitrogen and phosphorus, which have likely the most impact on taste, are involved.

For example nitrogen: usually plants use nitrogen to form plant proteins. Enzyme systems rapidly reduce nitrate-N (NO3-) to compounds that are used to build amino-nitrogen which is the basis for amino acids. Amino acids are building blocks for proteins, most of them are plant enzymes responsible for all the chemical changes important for plant growth.

Sulfur and calcium among others have major roles in production and activating of proteins, thereby decreasing nitrate within the plant. Excess nitrate within the plant may result from unbalanced nutrition rather than an excess of nitrogen.


Summary:

Preharvest flushing puts the plant(s) under serious stress. The plant has to deal with nutrient deficiencies in a very important part of its cycle. Strong changes in the amount of dissolved substances in the root-zone stress the roots, possibly to the point of direct physical damage to them. Many immobile elements are no more available for further metabolic processes. We are loosing the fan leaves and damage will show likely on new growth as well.

The grower should react in an educated way to the plant needs. Excessive, deficient or unbalanced levels should be avoided regardless the nutrient source. Nutrient levels should be gradually adjusted to the lesser needs in later flowering. Stress factors should be limited as far as possible. If that is accomplished throughout the entire life cycle, there shouldn’t be any excessive nutrient compounds in the plants tissue. It doesn’t sound likely to the author that you can correct growing errors (significant lower mobile nutrient compound levels) with preharvest flushing.

Drying and curing (when done right) on the other hand have proved (In many studies) to have a major impact on taste and flavour, by breaking down chlorophylls and converting starches into sugars. Most attributes blamed on unflushed buds may be the result of unbalanced nutrition and/or overfert and unproper drying/curing."

*Edit
 
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reza92

reza92

Well-Known Member
Lucky Luke said:
100% agree with you, You cannot flush immobile nutrients out- their immobile, but if you know the finishing date then u can save some $ on nutrient costs.

Only way you can know finishing dates is with the 2nd run of a clone. So watering at the end makes financial sense with no loss of yield or potency for those doing longer clone runs.
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And it really only makes a decent financial difference in very large grows ie people running multiple Res’s in the 1000’s of litres
 
DustyDuke

DustyDuke

Well-Known Member
reza92 said:
Yeah and teknik still gets around the led gardener forum
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Yeah they started ledgrowforums but it didn’t take off and there mainly on chuckers now. They made to many people mods to quick and it was the same boys, I think there was only enough room for one other forum at the point and chuckers had to much momentum. Also limiting yourself to leds probably not the best but there was sales intended.
 
klx

klx

Well-Known Member
DustyDuke said:
Yeah they started ledgrowforums but it didn’t take off and there mainly on chuckers now. They made to many people mods to quick and it was the same boys, I think there was only enough room for one other forum at the point and chuckers had to much momentum. Also limiting yourself to leds probably not the best but there was sales intended.
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I think they are all at cannalysts.org. I joined when they first started it but I dont really have time for so many forums so didnt really spend any time there and I think they have rebuilt the db since then as I just checked and I cant log in. They were doing lots of LED testing and techy geeky stuff which can be fun
 
DustyDuke

DustyDuke

Well-Known Member
klx said:
I think they are all at cannalysts.org. I joined when they first started it but I dont really have time for so many forums so didnt really spend any time there and I think they have rebuilt the db since then as I just checked and I cant log in. They were doing lots of LED testing and techy geeky stuff which can be fun
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I have signed to a few forums but I don’t really go anywhere other then here to hard to keep up
 
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