5x5 LED - T-Time grow time

ttystikk · Jun 2, 2018

Prawn Connery said:
I might have to agree to disagree on that. Coco is a good buffer because it has a high cation exchange capacity - unlike rockwool or perlite or hydroton or other types of reduced media water culture - so binds cations that would otherwise build up in solution and start the process of reverse osmosis, where the concentration of nutrient in solution exceeds that of inside the plant, and starts to draw water from the roots in the opposite direction to which it normally passes to balance the equation on both sides.

All the issues I've had so far growing in coco under LEDs have been related to underfeeding, rather than over-feeding. Either the LED light, being a much fuller (complete) spectrum than HIDs, is driving photosynthesis more efficiently, or I've simply been underestimating how bright they are for their power consumption.

Your plants don't look like they need less nutrient to me, but that's just my opinion, and I have quite a few years experience growing in coco.

Now, you can try underfeeding them - and if it works, fair play - but you could also try increasing the concentration or, as you have suggested, cut down on the number of waterings each day to allow nutrient concentrations at the root zone to build more due to evaporation and reduced flushing. By slowly increasing the concentration, you'll soon know if that's what the plants need and the worse that can happen is you start to burn a tip or two - in which case you simply flush and start again.

I'm not writing this to be argumentative - it's what I honestly believe.

This is sound advice.

T-Time · Jun 4, 2018

Thanks guys for the advices. I kept the EC like it was and ladies are liking it.

Did some branch control today as they are getting a bit mad with all all new shoots.
Still no sign of flowers.

T-Time · Jun 6, 2018

Can ayone with better electric understanding then me (mostly everyone

) help me out here.
I'm looking to slow down those fans https://www.amazon.co.uk/Generic-Electrical-3-Speed-Oscillating-12-Inch/dp/B001P5QP7G/ref=mp_s_a_1_3?ie=UTF8&qid=1528282145&sr=8-3&pi=AC_SX236_SY340_FMwebp_QL65&keywords=12+desk+fan what would be the best way to do it?
I have one of those fan speed controllers. https://www.amazon.co.uk/Variispeed-Fan-Speed-Controller/dp/B00HXDXBAI
They do slow the fan down but make them humm , which I don't think is best thing for the motor.
Any other way to slow them down ?

wietefras · Jun 6, 2018

I use a variac. A transformer with a knob on top which allows you to select the voltage you want to use. Nu humming over the whole range.

"They" claim you shouldn't dim them too much because the fan motor could overheat. So perhaps that's something to keep in mind (check the motor temp after running it for a while dimmed down), but I never noticed any overheating at all. There is less cooling from the fan when it runs slower, but also less heat produced so ....

ttystikk · Jun 7, 2018

T-Time said:
Can ayone with better electric understanding then me (mostly everyone ) help me out here.
I'm looking to slow down those fans https://www.amazon.co.uk/Generic-Electrical-3-Speed-Oscillating-12-Inch/dp/B001P5QP7G/ref=mp_s_a_1_3?ie=UTF8&qid=1528282145&sr=8-3&pi=AC_SX236_SY340_FMwebp_QL65&keywords=12+desk+fan what would be the best way to do it?
I have one of those fan speed controllers. https://www.amazon.co.uk/Variispeed-Fan-Speed-Controller/dp/B00HXDXBAI
They do slow the fan down but make them humm , which I don't think is best thing for the motor.
Any other way to slow them down ?

The standard fans can be speed controlled with a simple rheostat.

Those with brushless motors, like Can Fans brand units, need the Variac, which is quite a bit more expensive.

T-Time · Jun 7, 2018

I think rheostat is what I have at the min.

Anyways. Here's new fans. Not sure I like them tho.
There are two 16" on the outside and one 12" inside. Will probably replace 12" with another 16".
Orrrr if I manage to find big enough fan blades I would use only two 25-30" fans.

lukio · Jun 8, 2018

looking good T! They seem to be liking the higher ppm? nicer colour i reckon.

i'm on 1 - 1.1ec megacrop or 500 - 550ppm on the .5 scale from O ppm RO water, so like half yours?! Mad!

T-Time · Jun 9, 2018

Yep they are liking it. It's mind boggling how much food they want!
It's either genetics or something to do with megacrop + Epsom , or both.
It's not a biggie as the MC is fairly cheap and I've got another 10kg of it just to be safe :bigjoint:

I just hope they will soon slow down as there is only 25-30cm left for them to grow. If not, some heads will be chopped. No sign of flower yet :/

T-Time · Jun 10, 2018

First signs of flower. It took them 12 days from flip.

Plants have a very nice colour only with very slight burned tips.
Bumped the lights to 960W (max).

Temp 27-28*C
RH 50-55%
EC 2.5 - I gave them slightly more Epsom and slightly less MegaCrop. I might start backing EC off but will see first how they gonna react to stronger light as more light requires more food.

Bottom left ladie is the youngster that barely made it at the start. Top right is a Skunk XL. Strongest plants are all on the top row. All farthest from wifi signal , again this round. I think I'm going to shield the smart plugs from the plants. Maybe it's just a paranoia but i think it's plants the closest to them, don't like it. You never know...

Tied them down and cut some unnecessary branches. It is the most time consuming stage of the grow, but Zen garden doing it's thing :hump:

SSGrower · Jun 10, 2018

T-Time said:
First signs of flower. It took them 12 days from flip.

Plants have a very nice colour only with very slight burned tips.
Bumped the lights to 960W (max).

Temp 27-28*C
RH 50-55%
EC 2.5 - I gave them slightly more Epsom and slightly less MegaCrop. I might start backing EC off but will see first how they gonna react to stronger light as more light requires more food.

Bottom left ladie is the youngster that barely made it at the start. Top right is a Skunk XL. Strongest plants are all on the top row. All farthest from wifi signal , again this round. I think I'm going to shield the smart plugs from the plants. Maybe it's just a paranoia but i think it's plants the closest to them, don't like it. You never know...

Tied them down and cut some unnecessary branches. It is the most time consuming stage of the grow, but Zen garden doing it's thing

View attachment 4148778 View attachment 4148780 View attachment 4148781 View attachment 4148782 View attachment 4148783 View attachment 4148784

How many g/gal mc and Epsom does it take you to get those readings?

T-Time · Jun 10, 2018

SSGrower said:
How many g/gal mc and Epsom does it take you to get those readings?

4.62g/gal Epsom and 13.87g/gal of MC.
Sorry for weird figures but I'm using 5 litre water containers

and it comes to 3.5g/5L of Epsom and 10.5g/5L of MC

EDIT:
Fixed my poor stoner math calculations

Dave455 · Jun 10, 2018

T-Time said:
First signs of flower. It took them 12 days from flip.

Plants have a very nice colour only with very slight burned tips.
Bumped the lights to 960W (max).

Temp 27-28*C
RH 50-55%
EC 2.5 - I gave them slightly more Epsom and slightly less MegaCrop. I might start backing EC off but will see first how they gonna react to stronger light as more light requires more food.

Bottom left ladie is the youngster that barely made it at the start. Top right is a Skunk XL. Strongest plants are all on the top row. All farthest from wifi signal , again this round. I think I'm going to shield the smart plugs from the plants. Maybe it's just a paranoia but i think it's plants the closest to them, don't like it. You never know...

Tied them down and cut some unnecessary branches. It is the most time consuming stage of the grow, but Zen garden doing it's thing

View attachment 4148778 View attachment 4148780 View attachment 4148781 View attachment 4148782 View attachment 4148783 View attachment 4148784

That last massive defoliate might have set back flowering some...

SSGrower · Jun 10, 2018

T-Time said:
4.62g/gal Epsom and 13.87g/gal of MC.
Sorry for weird figures but I'm using 5 litre water containers and it comes to 3.5g/5L of Epsom and 10.5g/5L of MC

EDIT:
Fixed my poor stoner math calculations

The weird numbers are fine. Wish we were on metric system.
I was getting tip burn a 6g/gal in soil, but I also am running 1/2 the watts.

ttystikk · Jun 11, 2018

T-Time said:
I think rheostat is what I have at the min.

Anyways. Here's new fans. Not sure I like them tho.
There are two 16" on the outside and one 12" inside. Will probably replace 12" with another 16".
Orrrr if I manage to find big enough fan blades I would use only two 25-30" fans.

View attachment 4147477 View attachment 4147478

I much prefer pushing air up from the bottom, as it will naturally want to rise as it warms.

T-Time · Jun 12, 2018

Dave455 said:
That last massive defoliate might have set back flowering some...

You are most likely right here.

ttystikk said:
I much prefer pushing air up from the bottom, as it will naturally want to rise as it warms.

Space limitations. In my space other way around makes more sense. If I would use different light setup (not water cooled) I wouldnt be fighting against natural laws of physics.

Ladies today. Bottom few stil hungry.
All got really thirsty and theres no run off so I might bump the feeding to 5x a day. Some pots are dryer the others, I'll probably shuffle them around when I get some time.

T-Time said:
4.62g/gal Epsom and 13.87g/gal of MC.
Sorry for weird figures but I'm using 5 litre water containers and it comes to 3.5g/5L of Epsom and 10.5g/5L of MC
Thanks
EDIT:
Fixed my poor stoner math calculations

I must be stonned as hell that day! :oops:

The numbers are » 2.65g/gal Epsom and 7.95g/gal of MC.
Sorry @SSGrower , the conversions wreck my head :eyesmoke:

T-Time · Jun 13, 2018

Hey look what arrived today :bigjoint:

I think I'm sorted for good few years now :cool:

T-Time · Jun 15, 2018

Since I increased number of feedings a day, I've noticed some leave tips got twisted. I think I have to back off EC a lil bit. Other then that nothing new happening. I think they slowed down with stretch, so it's time for next defoliating session very soon.

ttystikk · Jun 15, 2018

Get the nutrient balance right and low EC isn't a problem.

T-Time · Jun 15, 2018

ttystikk said:
Get the nutrient balance right and low EC isn't a problem.

It's only a two part nutrient. It will be hard to do....
And I want to lower the EC, not rise it.

What nutrients might be causing it specifically? I might be able to rise/lower pH to adjust to that a lil bit.
Or can too much cal-mag does that ? I had a fear I was overdoing it a bit.

ttystikk · Jun 15, 2018

T-Time said:
It's only a two part nutrient. It will be hard to do....
And I want to lower the EC, not rise it.

What nutrients might be causing it specifically? I might be able to rise/lower pH to adjust to that a lil bit.
Or can too much cal-mag does that ? I had a fear I was overdoing it a bit.

When I reduced calcium I had better results.

That's anecdotal, not axiomatic.

5x5 LED - T-Time grow time

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