BC Sweet Tooth Leaf Problems

[Ottcanuk]

Hi everyone. I have 2 plants that are showing some problems. These are BC Sweet Tooth's that are nearly 4 weeks into flower. One has severely discoloured lower leaves, and the other has discoloured tips and a few brown and curled small leaves near a few flowers. I use a hydro bubbler system. The PH is between 6.0 and 6.5. Any thoughts?

Plant 1, notice leaves near the flowers:



Plant 2: Severely discoloured lower leaves:



Thanks!

 

[WeedTime]

your nutes ?

 

[Moppel]

i would say that your ph is way to high for a hydro system.

 

[Ottcanuk]

Hi Weedtime. I am using IONIC Bloom nutrient, it's a 3-2-6 nute (recommended PH 5.8 - 6.2). I also use Dr. Hornby's Big Bug 0-10-40.

Thanks!

 

[Ottcanuk]

Since I am only a couple of weeks away from harvesting these gals, i've decided to start my flush now. I did notice that there seems to be some "residue" in the bottom of the buckets. Any other comments?

Thanks!

 

[sproutco]

I am using IONIC Bloom nutrient, it's a 3-2-6 nute (recommended PH 5.8 - 6.2). I also use Dr. Hornby's Big Bug 0-10-40.

How do measure using these? Are you blindly guessing? Adding alot of potassium with the big bud will cause an imbalance between potassium, calcium, and magnesium if the ionic bloom nutrient is balanced. You will get a calcium or magnesium deficiency or both. If you increase potassium, you should probably also increase calcium and magnesium. It should be 4:2:1 ratio of potassium to calcium to magnesium. 200 k then 100 ca and 50 mg. In my signature is a link to a calculator to figure ppms. Enter net weight of the bottle in grams, total ml of the bottle, ml your using, and % of the elements like 5% calcium. It gives you ppms of each element. If you don't know the type of nitrogen but know total % nitrogen in the bottle, enter that number once in the nitrogen section under urea, nitrate, or ammonia but only enter it once. Here is an example.

Click on it to enlarge. Once larger, put your cursor in the lower right corner to make even larger and clearer.



You can compare what your doing to suggested levels on the same page. Use the low rates shown till you get a feel for fert strength using ppms.

Your plants look spindly. (no offense) Maybe keep the light closer to the tops or increase watts per square foot.

Just for reference:
1/4 teaspoon powdered gypsum per gallon of water = 60 ca
1/4 teaspoon epsom salts per gallon of water = 30 mg

.

 

[Ottcanuk]

Hey there. How do i measure this?

Well, for the IONIC Bloom nutrient 3-2-6:
3% total nitrogen
2% available phosphate
6% soluble potash
Mixture is 5mls per litre

For Dr. Hornby's Bib Bud 0-10-40, guanteed analysis is as follows:
10% Phosphorous
40% soluble potash
7% magnesium
Mixed at .5 grams per litre (powder)

As for the plants looking spindly, i agree with that, and i recently upgraded my lighting, now using hps 400.

Thanks for the info!

 

[sproutco]

The big bud adds 167 ppm potassium. This is alot. You should use the calculator to figure your liquid. Get the ppm totals. 4:2:1 potassium to calcium to magnesium. You may just need to add some epsom salts and gypsum when using the big bud.

 

[Ottcanuk]

Thanks for the info. Unfortunately, the calcium and magnesium levels are not listed on this product.

 

[Ottcanuk]

I just found some info on Advanced Nutrients web site. Basically it says if the Big Bud product is used throughout flowering, it should be the only nutrient. I have been using this with the IONIC Bloom product. This may be my answer. Any thoughts on which product i'd be better off using during late flowering?
Thanks again!

 

[sproutco]

Low calcium, magnesium, and boron in ionic bloom

Low calcium, magnesium, and boron in ionic bloom

Ionic Bloom Concentrate

%W/V diluted 10ml/litre PPM W/S

Nitrate-Nitrogen 2.3% 227 ppm nitrate nitrogen

Ammonium-Nitrogen 0.1 9

Total Nitrogen 2.4 236

Phosphorus 0.8 81

Potassium 3.835 384

Calcium 1.3 130

Magnesium 0.32 32

Sulphate 0.40 40

Iron 0.039 3.9

Manganese 0.011 1.1

Boron 0.003 0.26

Zinc 0.003 0.26

Copper 0.0013 0.13

Molybdenum 0.00065 0.065

Cobalt 0.00065 0.065

Nickel 0.00065 0.065

EC at 1:100 2.3mS/cm2

TDS at 1:100 2028mg/litre TDS

% NH4-N 3.8% of total N

pH 5.8 to 6.3

You can see your not 4:2:1 potassium to calcium to magnesium. You should be using 5ml per liter. This would give you 192 potassium. You need 96 calcium. You have 65. So add 1/8 teaspoon gypsum for 30 ppm calcium per 3.8 liters. You need 48 magnesium. You have 16! Add 1/4 teaspoon epsom salts per 3.8 liters. You don't need big bud with this.

You would only have .13 ppm boron with 5ml liter bloom. You need at least .3 ppm See boron the secret to more flowering below for hydro rates to add. My rate adds .15 ppm boron. .15+.13 = .28 ppm boron so that works out well.

If you add 2.5 grams per liter big bud this would add 84 potassium. Your total would then be 275 potassium. You would need 138 calcium and 60 magnesium. (don't raise mag higher than this). You would need to add 3/8 teaspoon epsom salts and 1/4 teaspoon powdered gypsum Per 3.8 liters to the big bud 2.5 grams/l and 5 ml /l bloom. (Dont forget your boron is low!)

Keep ph close to 6.

 

[Ottcanuk]

Great info, thanks alot!