My 2 grow after 15 years :)

[exploziv]

Bro I would check that meter, maybe a calibration just to be sure? My Calcinit is granules, not flakes, but very close in percentages to yours, and will yeld completely diferent results. Putting the data into Hydrobuddy gives EC 3 as well, and that is usually around 5% error at most from prediction to actual measure. Sorry to stress this so much, but its really a unexplaned 10x diference there in what you are getting.

Just did a test and adding 3 gr to a liter of 0.3 ec water yelded end ec 2.95. So that puts it at 2.65 EC per liter..

 

[unigreen]

EC meter is fine. It shows EC 0 of my RO water, 0,6 tap water and after I add 0.5 ml nutrients to the bucket it shows EC rising up ( 0.2 / 0.3 / 0.4 )
Really appreciate you helping me out - i was really stressed out after you said i spray with too strong a solution.
I hope it is everything alright. But if you are sure that this is wrong please try to explain it to me.
Cheers

 

[unigreen]

I need to buy the second EC meter anyway ( got 2 ph meters to be sure ph is good ) so i will order like now.
But :
I sprayed plants with 1 lamp turned off then after 2 hours when i was turning lamps back ON, some of plants have small amount of water in few places

I think if soulution would be 10x to strong and the lights after 2 hours was back to 100% strength for next 6 hours, there would be damages, i think...

 

[unigreen]

But wait - maybe i smashed some of data here LOL

What i did from beginning :

I put 125 g to 1.25 L of RO water

then i take 9ml of that solution and add to 3 L of RO water...

YEAh i deffinietly tell you wrong amount LOL now i see

 

[exploziv]

Somehow that mistake u did there saved your plants a bit, bro!! Thats a mad EC of unbalanced feed to throw at a plant. And leaves should not be touched by anything over 1 EC anyway..

 

[unigreen]

Friend of mine tells me that calculation i was using before :

1kg / 10 L - and that concetrate use in ratio 1:50

I made that concentrate BUT only for 1.25L ( 125g calcinit used , concentrate have strange of 100g / 1L) and then i was wondering is it OK so checked what Yara calcinit says at the back of bag.

There is that ratio : 300g - 1000g / 100L

LOL now i see its too much, because fertigate ratio instruction says:

"Fertigation - the plants are watered, depending on the species and development period, with an aqueous solution of fertilizer at a concentration of 0.01–0.2% (0.1–2 kg / 1000 liters of solution) "

so how the heck i didn't see that I'm thinking of stronger solution to foliar feed :|

Yeah I deffinitely was tired yesterday evening.

So much luck

Thank you for helping me figure it out.

 

[exploziv]

Yes, somehow that application rate info (i am guessing u got from a website unrelated to yara ??) is so stupid! What you said now in your last post seems correct.
Glad I could help, and also happy to know that your mistake didnt hurt any plants.
Yeah it does make sense for spraying hectares via a dosimeter. But bad info, since that is not explained!

 

[unigreen]

Today update:

They are rocking!

Few plants that i sprayed yesterday with Yara Calcinit seems to be ~ bigger / better / healthier LOL i know its my autosuggestion in 99% but...

Also I've got a problem with that "paper leaves" with evaporated wax ? or something like that happend when lamp is too strong, or too close etc.
So i hang lamp really high – now I think plants are stretching up.

Lamps are 600W full spectrum, ppfd at high of 50cm in the center are 940um. Also apectrum isnt really great - too much white colour.

How much i can lower lamp in olders plants section ? 30% more down sound reasonably ?

 

[DoobieDuck]

Nice...

 

[Creeperpark]

Very nice set-up friend. In regards to the first question above. If you are using a pocket pH meter you can't get an accurate pH reading if there's less than 100 ppm in the water. If there's nothing in the RO for electric conductivity, you will get a false reading. I always try to stabilize my pure water ahead of time with cal mag before I check the pH and add nutrients. As hydrogen escapes into the air the pH will rise and adding calcium will help stabilize the water. The pH is always changing. So while strictly speaking water does not escape, hydrogen does making the pH rise.

 

[unigreen]

Salut !

Plants show some first sign of deff :






















Any ideas ?

Thank you for the good words

 

[unigreen]

Full size pics :

https://ibb.co/album/NVT2JC

 

[exploziv]

Most probably ca and mg.

 

[unigreen]

Thank you.
That's what I thought.
So the last foliar calcium was weak.
I sprayed them once again yesterday - here's some shots from action

 

[exploziv]

Hopefully you did add some Mg too, if not I see a big chance of battling that defficiency next.

 

[unigreen]

Yes - there was Epsom salt sprayed between calciums

1 day Cal -> Next day Epsom salt -> Next Calcium ( yesterday )

 

[unigreen]

Today i will spray just RO + Rhizotonic

 

[Lester Beans]

Hey nice set up!!

To save all the hassles maybe invest in some Botanicare cal/mag and just add to your feed and take the guess work out of the cal/mag ratios? Also the leaves show some curl pointing to pH being slightly off which may be causing the deficiency. I haven't grown in straight peat so I do not know the proper target pH, just a suggestion.

Great looking grow, I am just trying to help from what I see in the pics. Those are some very uniform seedlings, especially being multiple strains. Well done!

Going to stick around for the show!

 

[unigreen]

Hello !

Today was a busy day - finally connected more lamps

Now there are 2400W above 1 table and the plan is to get 3000W

Quick update:

Thank you, Lester Beans I appreciate that you guys want to help me out

Yesterday I ordered Canna Cal Mag Agent. Is the Botanicare Cal Mag is something better ?

Leafs seems to be light green, last time I was using EC 0.8 and made some runoff - do i need to water them with just RO water every 2 watering or it can be nutrients EC 0.8 every time but let some runoff?

Cheers guys!

 

[exploziv]

Do not water them with r/o water ever. Add a bit of cal mag to balance and help ph it easier. Pure water is not a good drink for living things. Unless rebalanced in some way.
Anyway at 0.8 ec you can water with nutes every time, with little to no runoff. But some runoff is good at least some waterings.. to keep salts in check.