Undefined problem (cry for help)

[Senny]

I'm afraid I can't do that right now. My plant is only 3 weeks old and it still pretty small and fragile. I'll definitely apply your advice about changing soil, but right now I need a solution to prevent cannabis from dying before transplanting.
Any ideas? Maybe its better to leave it simply grow?

[Salvein211]

This is a very interesting thread for me right now because one of my mothers is doing this same thing! I am using fox farms forest soil, and the mother is about a year old, 3 gal bucket. For lighting I am just using x2 23w cfls with those hood brackets that focus the light. Sorry if I'm high jacking the thread, just thought I'd share my same frustration. The thing is I'm using good soil and I always correct the pH. Being old soil, I have been adding fox farms nutrients (grow big and the other veg nute). The only thing I can say is maybe the temps get low at night as its in a room by itself where the heat may not get to. Maybe lower 60's... But defiently not any lower. I do walk by the plant often though but how is this different from a fan blowing on it?

What I did do recently... I took the mother out of her pot, used my fingers to break apart the soil on the bottom 25%, and repotted in the same 3gal pot with fresh soil. Things haven't changed and the problem started before this. It's my GDP strain so I really dont wanna lose it. Anyways I'm sorry again if this is a hijack, but I was also thinking this might spark some ideas for others to go "oh yeah maybe thats our problem."

But back to your problem at hand. So you are only using 1 23w bulb correct? These things don't put out much heat but if too close it will burn the leaves. Maybe try to pull your light away a bit and go with x2 23w bulbs. One of these will not be enough for much longer anyways. I would agree with your soil being inadequate, because like others have said, it isn't for weed. I find that MG soil (miracle grow), binds up and doesn't absorb water very well (could be my problem), but when I switched to fox farms ocean forest soil, everything changed for the better. As for your pH problem, this is why I hydro now, lol! I think your pH problems are due directly to soil choice and with FFOF I never ran into this, but with MG I did every time. How to fix this... You can try lower pH and flush the water through, but it is a ***** to lower overall soil pH. The last thing I will add is if and WHEN you choose different soil, you can also go with a soil mix with very low to no added nutrients. I forget the name of the soil I'm thinking of, maybe Progrow or something, but what this allows you to do is monitor exactly how much nutrients your plants get. Of course you will need to feed often, but this is a more stable approach. Also, these soils I have mentioned have good buffers, which keep your pH from changing drastically up or down. A friend of mine uses this Prosoil, and never checks his pH, even with adding nutes as often as needed. I've seen his results, and this is a true testiment to how well these buffers work. Anyways, hope I helped in some way..

[Faddenator]

Ph of water is about 7,5. Lowered it to ~ 6,6 - 6,7 (lemon acid) and flushed the plant with approx. 2 litres of water.
I was really impressed, that flushed liquid had ph about 7,5! That means that real soil ph level is up to 8!!!!
Damn...
Can I lower soil ph with permanent watering (provided I lower water ph to about 5,5?)

If these are accurate numbers, then you found your problem. 8.0 is when Nitrogen, Phosphorus, and Potassium will start to be be locked out from the plant. meaning it wont absorb these nutrients, which are essential. what do you mean by permanent watering? you should never keep your soil completely moist. the only exception to this rule is when they are just starting to sprout. I know polishpollack said that flushing will not help, but it may. but dont flush with acidic water. flush with properly ph'd water (right around 6.5) and continue to water with this, flushing whenever the soil's ph starts to rise.