First grow - what is wrong?

[Samsung123]

Hey peeps,

This is my first grow ever. It's a Lowryder #2 feminized strain. I use a 6 L pot and mixed it about 75% potting soil(fertilized) and 25% volcanic rocks. I know it's not ideal to plant seedlings in pre-fertilized soil, but I couldn't find any soil without nutes added. So I just flushed the soil a few times to get rid of some of the nutes. The light source is 108w cfl.

The plant grew nicely and showed it's pistils on day 18(above soil).

I only used water every other or third day as the soil nutes should last 4 weeks. But on day 25 the leaves suddenly turned yellow. Practially overnight. After some research I came to the conclusion that it could be a zink deficiency, and adding some potassium would fix it. Then I mixed 1ml/l biobizz grow and 1ml/l biobizz bloom and fed her. The next couple of days she looked the same. So three days later(which was yesterday) I added 2ml/l biobizz grow and 2ml/l biobizz bloom.

Today she is still looking the same. I don't want to give her any nute burns so I probably won't feed her more than 2ml/l as of yet.

By the way, I just got a ph meter and ppm meter a couple of days ago. My tapwater ph is around 7.2 with a ppm of 77. So she has been watered with ph 7.2 until I started using biobizz, which lowered the ph to 5.8

To be honest, I have not been too strict with the 18/6 light scedule I was hoping for. They have been on a pretty inconsistent light cycle, but I have installed a timer now, so it should be better now. Hopefully she won't become a hermie..

Do you guys have any ideas or tips for me? I don't want her to suffer



http://imageshack.us/photo/my-images/685/img6120ba.jpg

[Uncle Ron]

No experience with auto's, but I do have some with the Bio Bizz products you mentioned. I've grown two crops using their kit (Root, Grow, Bloom, Alg-A-Mic, Top Max) and in both cases the leaves started turning yellow during the third and fourth weeks of flowering. Needless to say I spent the next few weeks trying to find the right mixture of nutes and ferts, which I don't think I did because the leaves never did stop turning necrotic and yellowing. I do realize that these things happen, but typically not at the beginning or the middle of flowering.
Also to note is that I grew different strains with the same results.

I measured pH and EC, both of which were within the margins.
- pH before buffering: 7.3; after buffering: 6.3; after adding nutrients: 5.7
- EC before adding nutrients: 0.55; after: 2.58

I decreased the amount of water per feeding from 750mL to 500mL (10 liter container), and increased the fert/nute ratio by 50%. After a week (three feedings) some plants became considerably worse - more necrotic spotting, more yellowing. First thing that came to mind was that the nutrients were being locked out, so I measure the soil's pH and EC - both were within the margins. The next step I took was to flush the worst affected plants with water (pH buffered to 5.7). After a couple of days, I fed them and waited. Still no change, and in fact worse. Bud leaves (aka sugar leaves) were starting to spot and yellow, and the lowest fan leaves looked like they had absorbed most of the nutrients (severe nutrient burn). This leads me back to pH, so I changed the water supply. After a week, still no change and unfortunately time had run out and it was time to start flushing.
At least one plant hermied on me
Although the average yield per plant was 41gms, I still think it could have been higher had it not been for the nutrient uptake problems.
I suggest you consider what I am going to do - use different fertilizers and nutrients.

As for the timing of lights, can't be good for any plant when the photo-period isn't consistent.
One saving grace about growing auto's - they don't depend on the photo-period as do conventional strains.

Happy farming...

[treetop]

Hey peeps,

This is my first grow ever. It's a Lowryder #2 feminized strain. I use a 6 L pot and mixed it about 75% potting soil(fertilized) and 25% volcanic rocks. I know it's not ideal to plant seedlings in pre-fertilized soil, but I couldn't find any soil without nutes added. So I just flushed the soil a few times to get rid of some of the nutes. The light source is 108w cfl.

The plant grew nicely and showed it's pistils on day 18(above soil).

I only used water every other or third day as the soil nutes should last 4 weeks. But on day 25 the leaves suddenly turned yellow. Practially overnight. After some research I came to the conclusion that it could be a zink deficiency, and adding some potassium would fix it. Then I mixed 1ml/l biobizz grow and 1ml/l biobizz bloom and fed her. The next couple of days she looked the same. So three days later(which was yesterday) I added 2ml/l biobizz grow and 2ml/l biobizz bloom.

Today she is still looking the same. I don't want to give her any nute burns so I probably won't feed her more than 2ml/l as of yet.

By the way, I just got a ph meter and ppm meter a couple of days ago. My tapwater ph is around 7.2 with a ppm of 77. So she has been watered with ph 7.2 until I started using biobizz, which lowered the ph to 5.8

To be honest, I have not been too strict with the 18/6 light scedule I was hoping for. They have been on a pretty inconsistent light cycle, but I have installed a timer now, so it should be better now. Hopefully she won't become a hermie..

Do you guys have any ideas or tips for me? I don't want her to suffer



http://imageshack.us/photo/my-images/685/img6120ba.jpg

gl

[ZBeebs]

They're autos, you can throw light at 'em 24/7...no need for timers then.

I'd also tell you to make sure your PH is 6.3 or so ...should be around there for soil... Check your runoff as well... If your runoff is significantly higher or lower, you need to adjust the PH of your water...

[xXEXCALABERXx]

mmmmm the yellowing could also be that they are under fed the nutes already in the soil are slow release by passing water thru it and removing it could be starved of nutes?

pictures would help a lot on this one?

[Cisco]

Yep that's what I reckon jus need a good feed

[Loftmonkey]

[quote="Uncle Ron"]No experience with auto's, but I do have some with the Bio Bizz products you mentioned. I've grown two crops using their kit (Root, Grow, Bloom, Alg-A-Mic, Top Max) and in both cases the leaves started turning yellow during the third and fourth weeks of flowering. Needless to say I spent the next few weeks trying to find the right mixture of nutes and ferts, which I don't think I did because the leaves never did stop turning necrotic and yellowing. I do realize that these things happen, but typically not at the beginning or the middle of flowering.
Also to note is that I grew different strains with the same results.

me too Uncle Ron
Time for old timer maybe? Would love to know your thoughts on OT...
Keep safe

[ZBeebs]

No experience with auto's, but I do have some with the Bio Bizz products you mentioned. I've grown two crops using their kit (Root, Grow, Bloom, Alg-A-Mic, Top Max) and in both cases the leaves started turning yellow during the third and fourth weeks of flowering. Needless to say I spent the next few weeks trying to find the right mixture of nutes and ferts, which I don't think I did because the leaves never did stop turning necrotic and yellowing. I do realize that these things happen, but typically not at the beginning or the middle of flowering.
Also to note is that I grew different strains with the same results.

me too Uncle Ron
Time for old timer maybe? Would love to know your thoughts on OT...
Keep safe

This doesn't sound like nute problems, it sounds like PH problems.

[Uncle Ron]

No experience with auto's, but I do have some with the Bio Bizz products you mentioned. I've grown two crops using their kit (Root, Grow, Bloom, Alg-A-Mic, Top Max) and in both cases the leaves started turning yellow during the third and fourth weeks of flowering. Needless to say I spent the next few weeks trying to find the right mixture of nutes and ferts, which I don't think I did because the leaves never did stop turning necrotic and yellowing. I do realize that these things happen, but typically not at the beginning or the middle of flowering.
Also to note is that I grew different strains with the same results.
me too Uncle Ron
Time for old timer maybe? Would love to know your thoughts on OT...
Keep safe

This doesn't sound like nute problems, it sounds like PH problems.

Probably is the pH, but given the similarities using the same fertilizer and nutrients, gives me pause.
One way to be sure is to test the water before adding nutrients, after adding nutrients, and then test the soil after feeding.
Testing soil isn't difficult, just a pain in the ass (using conventional methods).
Soil is ok, but I'm changing over to hydro using expanded clay pellets in a drip system. Can you say AirPot?

Happy farming...

[Loftmonkey]

My ph is spot on, a buddie of mine has the same problem too, his ph is fine and he too uses Bio Bizz... I'm gunna give another bio ago me thinks

Keep safe

[Loftmonkey]

Soil is ok, but I'm changing over to hydro using expanded clay pellets in a drip system. Can you say AirPot?


Please let us know how that goes UR, I use airpots with soil, good results too, apart from what I think the bio Bizz is doing

Keep safe

[Uncle Ron]

Soil is ok, but I'm changing over to hydro using expanded clay pellets in a drip system. Can you say AirPot?
Please let us know how that goes UR, I use airpots with soil, good results too, apart from what I think the bio Bizz is doing
Keep safe

Will do, but be advised that I won't be starting another grow until maybe mid to end of summer... but then
Not only am I going to change from soil to hydro, but I will be using ferts and nutes from Advanced Hydroponics. http://www.head-nature.com/06505
I've heard good things about their products, so I will give them a go...

Happy farming...