Grow Mediums Seymour's 'Think Different' subthread off-topic discussions

[Trifid]

what about the flowering stage?? In order to keep the process of nutrients available and going around the plants system is it not advisable to keep the temps high in flower aswell, obviously im throwing everything i ever knew out the window here about growing plants and stepping into a whole new arena due to these lights mainly its the light cycle that triggers plants into flower but why do we need to lower the temps also?

Agreed. Yes it's likely to be related to nutrient mobility and availability. I can only assume then that this applies during the bloom cycle aswell. Beyond the break-even point, the plants will respond undesirably if subjected to constraints outside of what is tolerable - but if the air flow exchange is highly efficient, the influence of gaseous exchange temperature control by the plants is unlikely to be effected, so stabilizing the optimum bloom temperature to keep photosynthetic rate elevated is one way to overcome this and achieve the same outcome. I prefer to allow the plants (lab-cultivated Tobacco - Nicotiana tabacum)to regulate the temps themselves by keeping the air flow exchange above canopy level..

Swings and roundabouts but it's good advice from them never-the-less

 

[MrN]

not sure i agree with your theory because my pineapple express was switched over to bloom feed as soon as she sexed and she was chopped on 65 days

yes i can see where your coming from on this.i'm not sure what effects this kind of feedings would have on a DWC set up.like i mentioned earlier i'm in soil under 1000w hps from start to finish...i'm saying that in the set up i'm using,this feeding schedule seems to be working well.grated i have only tried it with the Mi5.but plan on doing the same comparison on my next grow to see what results i get from them.

 

[Cave Dirt Cody]

I have been studying mg for the last couple hours and become confused. Isnt mag immobile. Meaning it is not supplied to the plant through transpiration, but cition exchange?

 

[Trifid]

I have been studying mg for the last couple hours and become confused. Isnt mag immobile?

Hey Cody .. Magnesium is in fact highly mobile (low retention) in colloidal systems including soils - displacements occur most frequently in strongly acidic, or sandy media, where the magnesium can be readily leached into various mineral 'sinks' (sites of accumulation) by cation-exchange. When an Mg deficiency is accompanied with excess potassium availability, the situation is magnified. Despite it's profoundly important role in enzyme synthesis and related processes, magnesium forms the central cation in the chlorophyll molecule and plays an important role in fluorescence - the driving force behind the photosynthetic process.

Therefore, without sufficient amounts of magnesium - especially when the plant is cultivated under optimized photosynthetic conditions such as those provided by LEDs, the plants will begin to metabolize the chlorophyll in their existing leaf mass leading to senescence and abscission. This is often (but not always) indicated by the common, observable symptoms of magnesium deficiency, such as chlorosis, or yellowing of tissues connected to vascular structures which remain green in appearance - this tends to give the leaf a marbled appearance.

Due to the highly mobile nature of this element, the plant will adapt to a magnesium deficit by turning to it's internal source (or 'sink') in older leaves and translocate it to younger tissues - distributing the resource to meet it's nutritional demands. Therefore, the first sign of magnesium deficiency is usually the chlorosis of old leaves which tends to continue as the situation worsens.

 

[slightlystoopid]

Seymour what size air pump do you use in your bubble bucket I'm looking into dwc and just wondering whats the best size thanks

 

[Smidgette]

That was the best description of the Mg issue I have seen.

 

[DutchPassionTony]

ill invite you round one day mate and you can sample some l.e.d grown goodness for yaself, if your lucky ill let you do a smoke report on this "think different" for me

man I would love an invite too....

 

[DutchPassionTony]

yeah cheers for the input and everyones feed back but my problem only has just started to happen on my last 2 grows

i was using a 1 watt panel for the majority of my last grows and i used the 3 watt gen-x for the last few weeks, never had a problem when it was just the 1 watt panel, obviously the upgrade to the 3 watt panel has made shit loads of difference

i checked over on my l.e.d suppliers website and it does actually state that the correct temp for photosythnesis is between 80 - 83 and i personally thought that was a bit high and may cause heat stress on the plants so ive always kept my temps below 80 , if what you are saying is correct then growing my plants at the higher temps should fix the problem, like i said guys new light new setup and new set of rules here

ive upped the temps in my grow room now and its sitting at 81 degrees

Yo seymour. If....if...the Canna guys can get some reformulated feed would you be willing to test it in the future? There would be the logistical issue of getting the feed to you. Just a thought.....

 

[mr.mcgregor]

man I would love an invite too....

oi! back of the queue


test grow for canna!!!!!! go seymour go seymour:booya::dance:

 

[seymour-buds]

Yo seymour. If....if...the Canna guys can get some reformulated feed would you be willing to test it in the future? There would be the logistical issue of getting the feed to you. Just a thought.....

if and only if they did obviously id test run the nutrients, im not gonna stop growing with l.e.d lights any time soon so ill try and figure out a way to overcome the problem, wether it means running cal/mag from the start of veg right through flower or wether it means kepping my grow room above 80 degrees, im to far into my current grow to make any significant changes so ill have to experiment on my next grow

i think if canna had a nutrient line with the extra cal/mag already in place then they would hit the nail on the head and solve most peoples problems, it would just take away the hassle of having to buy the extra bottles

im not greedy (honest) ill happily let you guys sample my harvest, im sure there will be plenty to go round