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Overfert?(hydroponic)

jorgeXXL

jorgeXXL

Member
Hello everybody, I'm Jorge!!

Thanks for reading this!

So, I have two 23 days old Jorge's Diamonds #1 by DP that have been in a Nutriculture GT205 NFT system for 12 days now.

Some stains have appeared on the leaves:
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I'm using Canna aqua, Cannazym, Biorizhotonic, superthrives, Canna's organic Ph-, liquid calcium

EC 1.6 mS
Ph 5.8
temps. 25/28 °C
RH 35/45 %

I was thinking it was overferting but since it's my first time in hydro I wanted to ask for other opinions.
I lowered the EC to 1.1 and the next day it was 1.0 so now it's 1.2. they seem to react well, new sprouts are of a nice green
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share your opinion and have a nice day!
 

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resinryder

resinryder

Rubbing my glands together
Veteran
Not familiar with NTF applications. I do know that in E&F I can run EC 1.6 in veg with no problems but usually have to drop to lower EC readings, say 1.2 to 1.4 while in bloom.
Your ph is good. On my tables I run between 5.6 to 5.8.
Could be slightly over fert but also looks like not enough calmag.
How much of the liquid calcium are you using per gallon?
And to be honest, I'd drop the super thrive all together. I used to use it and found it to be unnecessary.
 
jorgeXXL

jorgeXXL

Member
resinryder said:
Not familiar with NTF applications. I do know that in E&F I can run EC 1.6 in veg with no problems but usually have to drop to lower EC readings, say 1.2 to 1.4 while in bloom.
Your ph is good. On my tables I run between 5.6 to 5.8.
Could be slightly over fert but also looks like not enough calmag.
How much of the liquid calcium are you using per gallon?
And to be honest, I'd drop the super thrive all together. I used to use it and found it to be unnecessary.
Click to expand...

hey there!

I'm using 15 ml of liquid calcium per 5 gallons

I'm adding no Mg though, could be a deficency of this element as raccoon is suggesting?
 
resinryder

resinryder

Rubbing my glands together
Veteran
If you are using a liquid calcium only with no Mag added then yes that could be the problem. Can you get a CalMag Plus type product?
 
jorgeXXL

jorgeXXL

Member
resinryder said:
If you are using a liquid calcium only with no Mag added then yes that could be the problem. Can you get a CalMag Plus type product?
Click to expand...

yeah I can. I was thinking about getting espom salt (as I added Calcium I add Magnesium)


if I use CalMag+, shouldn't the Calcium raise too much as I previously added it?
so should I change the nutrient solution if I use CalMag+?
 
resinryder

resinryder

Rubbing my glands together
Veteran
jorgeXXL said:
yeah I can. I was thinking about getting espom salt (as I added Calcium I add Magnesium)


if I use CalMag+, shouldn't the Calcium raise too much as I previously added it?
so should I change the nutrient solution if I use CalMag+?
Click to expand...

I'd do a res change just to be on the safe side.It should hurt but.....
How often do you do a res change?
How often do you flush the system with a clearx type product to remove nute buildup? That can cause problems as well. Salt buildups cause nute lock out which causes problems.
 
jorgeXXL

jorgeXXL

Member
resinryder said:
I'd do a res change just to be on the safe side.It should hurt but.....
How often do you do a res change?
How often do you flush the system with a clearx type product to remove nute buildup? That can cause problems as well. Salt buildups cause nute lock out which causes problems.
Click to expand...

I'm not flushing the system, however the plants are in it since 1st of July.

I changed the res once for now, I'm gonna change it every 10/12 days
 
jorgeXXL

jorgeXXL

Member
24/26 °C.

I'm afraid it could be a lockout, the spreader mat is full of residuals

 

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resinryder

resinryder

Rubbing my glands together
Veteran
That's why I asked if you flushed the system. On the E&F tables I have to flush and clean up everything once a month. I change the res every 2 weeks.
Some nute lines leave behind more "salts" residue than others. Salt buildup will cause what looks like deficiencies due to lockout. Will eventually cause the plants to die, yellow, crisp up the leaves, look like calmag deficiencies, etc.
I would have no idea how quickly the build up would occur in a NTF setup with a mat, but the more surface area for nutes to cling to the greater the chance of buildup. Since you have only been in the system for 15 days I'm not sure that would be your problem.
Water temps are a little warm but not really out of range enough to cause a serious problem. A bit cooler around 21C would be better for ya if possible.
 
jorgeXXL

jorgeXXL

Member
resinryder said:
That's why I asked if you flushed the system. On the E&F tables I have to flush and clean up everything once a month. I change the res every 2 weeks.
Some nute lines leave behind more "salts" residue than others. Salt buildup will cause what looks like deficiencies due to lockout. Will eventually cause the plants to die, yellow, crisp up the leaves, look like calmag deficiencies, etc.
I would have no idea how quickly the build up would occur in a NTF setup with a mat, but the more surface area for nutes to cling to the greater the chance of buildup. Since you have only been in the system for 15 days I'm not sure that would be your problem.
Water temps are a little warm but not really out of range enough to cause a serious problem. A bit cooler around 21C would be better for ya if possible.
Click to expand...

I'm afraid it could be a lockout because in the beginning temps were higher (like28/30 °C, now I'm using "freezer blocks" now.. those things you put in the freezer then you put in portable freezer..got it?don't know how to say it in english lol) and a strange green thing was all around the table

I just washed the table with water but I don't think it was really effective. Shit I'm paranoid now!!:whee:
 
resinryder

resinryder

Rubbing my glands together
Veteran
No worries mate. I know the freezer blocks you speak of. they work fine until they thaw, lol
Flushing with water will get a good bit of the residual washed away. Get a product like or similar to clearex. Put it in your res with plain ph'd water and flush for about a hour and a half. then change the res and add new nutes. Easy. A pain but easy.
I doubt it's a lock out issue with only 15 days in but like I said, I don't know how long it would take to build up in a NTF system.
 
jorgeXXL

jorgeXXL

Member
resinryder said:
No worries mate. I know the freezer blocks you speak of. they work fine until they thaw, lol
Flushing with water will get a good bit of the residual washed away. Get a product like or similar to clearex. Put it in your res with plain ph'd water and flush for about a hour and a half. then change the res and add new nutes. Easy. A pain but easy.
I doubt it's a lock out issue with only 15 days in but like I said, I don't know how long it would take to build up in a NTF system.
Click to expand...

thanks dude for your time.
anyway I change the blocks every 8/10 hours so the temperature doesn't go above 26/26.5 maximum.

tomorrow I'll try to buy CalMag+ and a flush product, then I'll flush the plants and I'll put them in a new nutrient solution.

My babies HAVE to be PERFECT.
:biggrin:
 
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