another sick seedling in my dwc

[funk_buddha]

This is what i'm working with..

I've got a small dwc and these ingredients as well as regular tap water (pH in the high 8 neighborhood).

General Hydroponic Nutrients "Total Nutrition" (3-1-3-0.4)
Schultz Liquid Plant Food (10-15-10-0)
Sulphuric acid (as pH down) which I have stopped using as I learned the disadvantages and risks
Sodium biphosphate (as pH down)
Epsom Salts
H2O2 3%
No-Damp soil fungicide whatever not using this for the hydroponics


As well as:
Perlite
Vermiculite
Rockwool
Average Potting Soil (+bonemeal)

And:
Aquarium pH test
Aquarium ammonia test (which i haven't used, i just have)

The sick plant is a seedling, the one next to it is a clone which is just reaching into the water. The plants are in a styrofoam cooler, both anchored with rockwool. This is the second seedling i've had in the same system start to die in the same way.

I'm using all my ingredients at low strength.

Any advice or recipes anybody could help me out with would be greatly appreciated.

I'm pretty sure its magnesium deficiency, i only got the epsom yesterday. I'll post more pictures in 3 or 4 days.






Thanks.

 

[Guest]

ph is your problem you cant grow pot with a ph of 8...get it down to 5.8 however you choose..i use sulfuric battery acid..use nitric acid use vineger whatever you want...just get the number where it should be...if you want to grow dwc you need to understand ph is everything..you can have a perfect mix and the plants not be able to uptake it because of ph

 

[MynameStitch]

you have a sulfur deficiency, magniseum mostly does not start on top plants unless it's in flowering or much bigger I have seen.

Your ph is the cause of your deficiency.

Soil ph must be around 6.3 to 7.0

Ph of your hydro was be 5.5 to 6.3 and wate temps NOT exceeding 70 F and not under 60 F

First you need to fix your ph and then add micronutrients accordingly if they do not fix after ph is fixed, cause cannabis uses small amounts of sulpur and if there is some in there the plant is not absorbing it from the ph being off balance. Correct ph first and if plant recovers feed normally. But either way you will need micronutrients so its better to get them now then later when you end up having another problem.

also when you say you are using at low strength how low ar you using with how much water?

Also how often are you feeding using each one?

 

[Hotgurl]

Sounds like your mixing the nutrients all wrong. What exactly is 3-1-3 gh nutes?
Do you have the analysis of the percent of the ingredients in it? This may be all you need. Lets see. More details.

Hey mynamestitch!

 

[10k]

in potting soil...dwc...rockwool...sodium.... whaaaaaaaaatttttt ?


Your description leaves me scratching my head in confusion.

what kind of clusterf'kd system is that ?

 

[MynameStitch]

lol I think what he means 10k is he is growing both hydro and soil

I scratched my head on it too uintill I seen the first picture and noticed what he was talking about, he definatly needs to be more clear though I will agree with you on that lol

LOL! I laughed though when I read the last line of your post too funny 10k!

 

[Brother_Monk]

I know I've been pimpin' this form.....BASIC INFO , but it seems to help speed up the process a little. Besides....I got most of it from one of your threads MyNameStitch. It used to be used all the time. It was a great help on OG, maybe it can help here too? Good to see ya posting in the infirmary again.

Peace
BM

 

[funk_buddha]

Haha, sorry that was a pretty confusing post (as you might have guessed, i was a little baked). The sick seedling is in rockwool alone, but i have plants in soil/perlite/vermiculite as well as perlite alone.

What i meant is that all the things in that list are things i have available. Not things that i use in combinations for the pictured plants.

The pH of the tap water is 8ish, but i've got 2 different pH downs, so its slightly under 6 normally. I know that the pH is almost everything, it was the first thing i got under control.

The nutrients i have are from a local hydro store, the name is "total nutrition" and as it implies.. it contains all the macro and micro nutrients in various amounts (it is pH adjusted).

My res is 3.5 litres. After i adjust the pH with sodium biphosphate (aparently i should be using my sulphur as well?) i add about 2 teaspoons of "total nutrition" 5 or 6 drops of schultz, a teaspoon of h202 and i just got the epsom so i haven't really gotten that down yet.

These things are all added when i fill the res with new water, when i do this i dump the whole thing out and mix it again.

Since i added the epsom a couple days ago the green in the middle of the leaves has expanded quite a bit and the newest leaves are quite a big greener.

So for this sulphur deficiency can i just start using sulphuric acid again?

Hope thats a little clearer, my head certainly is..
Thanks

 

[10k]

Thats a mg def. on that old lower three bladed leaf.

I would stop using and throw away that sodium biphosphate hot tub and plantless aquarium crap as the sodium in it isnt doing your plants any good.

Then I would go back to the hydro shop and pick up some gen hydro pH down (phosphoric acid).
Start using about 1/8th to 1/4th teaspoon per gallon epsom salts and post some pictures of the results in a few days.
The epsom should eliminate whatever slight sulfur def mns is seeing AND the mg def I'm seeing.

ps...I'd also skip the 3% h202
pss...While you're at the store, you might want to get yourself some gh floranova and switch to using that instead of your current nute cocktail.

 

[funk_buddha]

thank you 10k, that was very concise quick response, especially in comparison to mine.

i will probably go to the hydro store this weekend and pick up some ph down and look at the other nutrients as well.

the reason i originally picked this one is of course the name, it was also only $10.

 

[MynameStitch]

yup 10k nailed it on the spot! Saved me a post

Thank you brother monk, even though it had some rough spots it did help out a lot of peeps. I thank you very much for your kind words