10piotr74

Posts

45

Reactions

42

Joined

Sep 12, 2021

Points

18

Apr 14, 2023

#1

hello, aeroponic system with reverse osmosis water and from the beginning I have a problem with calcium deficiency, vegetation lasted 3 weeks, flowering 3 days
I use masterblend 4-18-38, calcium 15.5-0-0 (19%) and epson salt and add monosilicon (power si) and amino acids
Co2-1400
ppfd-1000
RH- 65%
I choose masterblend 4-18-38 [2g-3g-1g/gal] please help me thank you

 

Attachments

• Movie002.mp4

  139.9 MB
• 
  problem-with-calcium-ro-water-6.jpg

  95.9 KB · Views: 24
• 
  problem-with-calcium-ro-water-7.jpg

  77.5 KB · Views: 24
• 
  problem-with-calcium-ro-water-8.jpg

  103.3 KB · Views: 22

Last edited: Apr 14, 2023

freezeland2

Posts

3,421

Reactions

5,331

Joined

Apr 8, 2021

Points

263

Apr 14, 2023

#2

Have you added any calmag? RO water needs calmag added back in since an RO filter will remove it.

 

10piotr74

Posts

45

Reactions

42

Joined

Sep 12, 2021

Points

18

Apr 14, 2023

#3

freezeland2 said:

Have you added any calmag? RO water needs calmag added back in since an RO filter will remove it.

Click to expand...

if i use pure calcium, should i add calmag?

 

freezeland2

Posts

3,421

Reactions

5,331

Joined

Apr 8, 2021

Points

263

Apr 14, 2023

#4

10piotr74 said:

if i use pure calcium, should i add calmag?

Click to expand...

I’m sorry I missed that you were adding that calcium. That could be your issue. To much of that can lock your plant out.

 

freezeland2

Posts

3,421

Reactions

5,331

Joined

Apr 8, 2021

Points

263

Apr 14, 2023

#5

I’ll let a hydro guy take it from here. Been to many years away from hydro and I don’t want to give you bad advise.

 

mysticepipedon

Posts

4,738

Reactions

9,338

Joined

May 25, 2020

Points

263

Apr 14, 2023

#6

That's a magnesium deficiency, not a calcium deficiency.

 

10piotr74

Posts

45

Reactions

42

Joined

Sep 12, 2021

Points

18

Apr 14, 2023

#7

mysticepipedon said:

That's a magnesium deficiency, not a calcium deficiency.

Click to expand...

just increase the epsom salt, at the moment it gives 1g/gal then maybe try 1.6g/gal? Thx

 

Oldguy71

Posts

457

Reactions

883

Joined

Nov 29, 2020

Points

93

Apr 14, 2023

#8

Is that calcium nitrate your adding?

 

freezeland2

Posts

3,421

Reactions

5,331

Joined

Apr 8, 2021

Points

263

Apr 14, 2023

#9

mysticepipedon said:

That's a magnesium deficiency, not a calcium deficiency.

Click to expand...

But could be caused by too much calcium and magnesium is locking out. I would ditch the calcium and epsom at next reservoir change and use a commercial calmag solution. To easy to get things out of whack in hydro when mixing your own brew.

 

10piotr74

Posts

45

Reactions

42

Joined

Sep 12, 2021

Points

18

Apr 14, 2023

#10

Oldguy71 said:

Is that calcium nitrate your adding?

Click to expand...

Yes 15.5-0-0 3g/gal

 

Oldguy71

Posts

457

Reactions

883

Joined

Nov 29, 2020

Points

93

Apr 14, 2023

#11

I’m kinda thinking light burn. Have you tried raising your light? I think I’d stop the silica for now, it can lock out other nutrients.

 

Imzzaudae

Posts

2,027

Reactions

3,114

Joined

Aug 21, 2021

Points

263

Apr 14, 2023

#12

I'm also leaning towards light burn. Dark green with burnt tips makes me think over feeding as well. Not bad but it needs to be corrected.

 

Aqua Man

Posts

26,479

Reactions

59,693

Joined

Jun 12, 2018

Points

638

Apr 15, 2023

#13

I dont see a calcium deficiency either.

Whats the temperature?

can you show some pics of how you have your equipment arranged?

i would lower humidity to about 55% with those numbers of co2.

looks like a transpiration issue and i agree back the lights up a bit

 

hypertyper

Posts

12

Reactions

15

Joined

Dec 21, 2021

Points

3

Apr 20, 2023

#14

Isn't 2.5 EC quite a lot? I've made the mistake of trying to figure out what my deficiency was when really it was toxicity...