Help pleas

[Huawoi]

hello there,

This is my first attempt at growing a canna plant, i chose an autoflower amnesia haze since autoflowers should be "easy" to grow.
Now i'm in week 6 and used a 400w hps lamp with cool colors to grow after that switched to a 250w hps with warm colors.
Got 3 plants the 2 in front have some leaves getting Brown spots after that the leaf gets yellow and dries out.
Tho the one in the back has nothing of that, that one is 1 week younger since the seed in that pot didnt hatchback i replaced it.
Now my question is, are the plants looking ok or should i be worried about the yellowleaf thingy?

 

[Huawoi]

Here are Some examples of the leaves, anyone has any idea what to do ?

I stopped giving canna flores npk 2-2-4, i thought maybe this was the problem but it doesn't seem to get better. Was this right to do so or should those plants just get more to fix this ?

Also read a post that i should give destiled water when the plant got to much nutrients so i'm on to that now for 3 days already but no improvement in sight...

Please help!

Greets

 

[namvet25]

I take it your growing in soil mix.When did you stop feeding veg nutes and what dosage were you using?Are you checking your intake water PH ? Also have you used any cal/mag?

 

[The Elvis]

I 2nd the cal mag question.. Your soil is locked out. Tell us what your feeding with?

 

[Huawoi]

Well i'm using normal basic potting soil , for flowers since i don't have growshops for weed in my country(Belgium).. And i gave them the canna Flores 10-20ml in a 2L watering can. Got the canna Flores from a growshop in Spain where i went on holiday last year. The dosage should be 1:200 and i stopped geving it 3 days from now. didn't add anything else.

 

[The Elvis]

Well i'm using normal basic potting soil , for flowers since i don't have growshops for weed in my country(Belgium).. And i gave them the canna Flores 10-20ml in a 2L watering can. Got the canna Flores from a growshop in Spain where i went on holiday last year. The dosage should be 1:200 and i stopped geving it 3 days from now. didn't add anything else.

Are you able to use Amazon or ebay?

 

[Huawoi]

I'm able to. What should i need since it seems to be only getting worse with the one in the front :S i hope it isn't already to late?

 

[Waira]

H'-- I see Ca defc. (fine spotting) ,and what looks like off pH damage causing the yellowing and necrosis,... that HPS light makes diagnosis difficult, so if you can, get us pics under normal lighting,... color looks pale too,... I can't find NPK info on that product, but even so, I agree with the other guys, you very likely have a pH issue, making your nute's partly unavailable,... and advising you how to fix it without knowing what the pH is not wise,... most likely it's acidic, but that's just a guess! do you have any type of pH testing equipment or kits?

 

[Huawoi]

H'-- I see Ca defc. (fine spotting) ,and what looks like off pH damage causing the yellowing and necrosis,... that HPS light makes diagnosis difficult, so if you can, get us pics under normal lighting,... color looks pale too,... I can't find NPK info on that product, but even so, I agree with the other guys, you very likely have a pH issue, making your nute's partly unavailable,... and advising you how to fix it without knowing what the pH is not wise,... most likely it's acidic, but that's just a guess! do you have any type of pH testing equipment or kits?

Well i don't really have that but Will in the future, now i tried with a testingstrip for a swimming pool. By digging it in nearby watered earth.. It seems that PH is certainly under 6, by the color of it i would guess around 3 or 4. The calcium seems to be between 250-500.

 

[Huawoi]

I guess it isn't possible to add Some ph maxi into the water and give it to the plant? (Pool product)