Deficiency/Lockout?

[Jumper114]

Looking online I would say micronutrient lockout. Cal / MG / Iron / K take your pic, the resolution is the same!

PHed flush at 5.5 is the recommendation

Alas I am just keen and not of knowledgable!

[HYDRO_VIRGIN#1]

Makes sense. I know uptake of each element is very PH dependent.

Res change or can you add bi carb to boost pH up to 5.8 or a lower pH such as 5.6 being RDWC ?

Is it ok to use bi carb in rdwc


Sent from my iPhone using Tapatalk

[Dale92]

It's a mobile nutrient it's either your P or K

Sent from my SM-G950F using Tapatalk

[HYDRO_VIRGIN#1]

Cheers for all the help guys, changed the res out last night, lowered ec and reset ph, think I’ve caught this pretty early as was only on 3 leaves on one plant, going to add a pk product I think.


Sent from my iPhone using Tapatalk

[ladymaryjane]

Hello there, your ph is too low as stated and this combined with your res temps are what is causing this and will lead to major issues if not resolved.

Set the ph to 5.9 - 6.0 and let it drift to 6.2, then take it back to 5.6 and again, let it drift up to 6.2 etc..

Most importantly, get those res temps down to as close to 18c as you can. Best way I found was to freeze water in pop bottles and add these to the res.

Hope this helps. Ps, While res temps are this high, watch those roots like a hawk for signs of rot, slime etc...

[HYDRO_VIRGIN#1]

Hello there, your ph is too low as stated and this combined with your res temps are what is causing this and will lead to major issues if not resolved.

Set the ph to 5.9 - 6.0 and let it drift to 6.2, then take it back to 5.6 and again, let it drift up to 6.2 etc..

Most importantly, get those res temps down to as close to 18c as you can. Best way I found was to freeze water in pop bottles and add these to the res.

Hope this helps. Ps, While res temps are this high, watch those roots like a hawk for signs of rot, slime etc...

Frozen bottles wouldn’t last very long in my 50 litre resevoir with 33 degree temps, I’m using hydroguard so hoping this helps out a bit, I keep bidding on nute chilliers on fleabay but to no avail, nearly got enough saved for a brand new 1 now anyway.


Sent from my iPhone using Tapatalk

[HYDRO_VIRGIN#1]

Hello there, your ph is too low as stated and this combined with your res temps are what is causing this and will lead to major issues if not resolved.

Set the ph to 5.9 - 6.0 and let it drift to 6.2, then take it back to 5.6 and again, let it drift up to 6.2 etc..

Most importantly, get those res temps down to as close to 18c as you can. Best way I found was to freeze water in pop bottles and add these to the res.

Hope this helps. Ps, While res temps are this high, watch those roots like a hawk for signs of rot, slime etc...

Forgot to say thanks for your help


Sent from my iPhone using Tapatalk

[M_C]

ph a bit low at 5.1

Without correcting that first you will continue to have issues

[ladymaryjane]

Frozen bottles wouldn’t last very long in my 50 litre resevoir with 33 degree temps, I’m using hydroguard so hoping this helps out a bit, I keep bidding on nute chilliers on fleabay but to no avail, nearly got enough saved for a brand new 1 now anyway.


Sent from my iPhone using Tapatalk

Lol, tell me about it, I used 7 or 8 500ml bottles adding one every 3-4 hours or so in my tank, also 50 litre but I was running nft. I ended up putting the bottle directly behind the delivery tube and it worked a treat. As you said, harder to do in culture though!

[ladymaryjane]

Just to clarify..that doesn't mean you're wrong though Jumper..I could very well be way off the mark here!

I've been told previously that potassium def in hydroponics are rare?..not sure if true or not.

Hello there, if you do get one, this will usually be due to low humidity which locks it out. If humidity is sound, ph is the next thing to check.