[Dropped Cat]

Looks real good, killing it big time!

subbed

[Rox]

Damn that's a good grow! I would love colas like that

What lights are you running?

[Vanilla Phoenix]

[c64]

Originally Posted by Rox

Damn that's a good grow! I would love colas like that

What lights are you running?

Howdy,

i use 2x 600 watts (Philips SON HPS).

[maimunji]

I think to swap my buld to philips is this son-t-pia plus 90000 lm? Are you trying osram nav-t super any comprasion if you use them both?
Great plants. Amazing gallery

[c64]

Originally Posted by maimunji

I think to swap my buld to philips is this son-t-pia plus 90000 lm? Are you trying osram nav-t super any comprasion if you use them both?
Great plants. Amazing gallery

Howdy,

yes it is the son-t-pia plus 90000 lm.
If the offer is favorable, I also use the Philips MASTER GreenPower 600W (88000lm). Philips and Osram lamps are both very good.
I did not make a direct comparison.

But ... before you think of a change of the lamp manufacturers, all other basic requirements should be right. Checking the right pH in the substrate is much more important in my eyes.

If this is not the case, the setting of the carbonate hardness of the water and / or the correct nitrogen ratio in the fertilizer is more important.

A pH meter with puncture probe is a must have. The drain measurement can be helpful, in addition to the measurement in the substrate.

greeting

[maimunji]

Thanks for good info. How accurate is measuring of the drain ph compare to this ph probe are they both equivalent when you measure? I always have low ph when I measure run off its 5.0 slurry test also measure 5.0 this with fresh bag canna coco profesional plus. Can you provide some data of your drain ph? I see ph probe say 5.7 but what run off say?

[c64]

Originally Posted by maimunji

Thanks for good info. How accurate is measuring of the drain ph compare to this ph probe are they both equivalent when you measure?

No, there are deviations in these measurements. Different pH values are present in the plant pot. Depending on the type of nitrogen, different pH values are obtained from top to bottom, or from bottom to top. A measurement with the puncture probe should be made close to the main root and in the middle of the pot.

In the case of the drain measurement, a pH value is obtained, which is formed from the sum which is present in the pot. For this purpose, the pH value of the new nutrient solution additionally distorts this. But...with a regular measurement, a drain measurement can also provide knowledge.

Originally Posted by maimunji

I always have low ph when I measure run off its 5.0 slurry test also measure 5.0 this with fresh bag canna coco profesional plus. Can you provide some data of your drain ph? I see ph probe say 5.7 but what run off say?

You use the Canna fertilizer Flores and Vega?
I am assuming you are feeding the right proportion to the needs of your plants.

It is a very complex topic and I do not know all of your factors. It may be, your carbonate hardness of the water is too low. It has a value below 5° dKH (German degrees)? Then you always have a pH value lowering in the substrate (with nitrate nitrogen fertilization).

There are various possibilities for pH correction in the substrate.
The hardening of your water with potassium hydrogen carbonate is a variant. 35.76 mg/per liter is required to increase by 1 ° dHKH.

But your pH reduction is not yet drastic. You have this knowledge so you can control this with high pH of your nutrient solution. Less acid neutralizes fewer carbonates. Always try to fertilize and flush with pH 6.2. It should help you something.

I have a minimal excessively high carbonate hardness for a pure nitrate nitrogen fertilizer. The optimum carbonate hardness for a pure nitrate nitrogen fertilizer is 5 ° dHK (German grade). This carbonate hardness results in a pH stability in the substrate.

I have a 6,5 ° dHK and have an increasing pH value in the substrate, which I balance with a low pH value (5.6) of the nutrient solution.

I hope to have helped you.


Getting information about pH correction in the substrate can be helpful. Interactions between carbonate hardness and nitrogen forms, nitrate and ammonium, are important basic knowledge in pH-related problems.

[maimunji]

Very helpful post and amazing knowledge.
This is some info for my city tap water.
GH 12 KH 5.5 Ph 8.0
I use Canna coco A&B. H&G cocos a&b and ghe 6/9 h3ad and looks like I have same measure with all of them drain always come around 4.9-5.0. I try watering with 6.2 and looks like I have calcium deficiencies with ph that high. 5.8 works best for me.

[c64]

Your carbonate hardness of 5.5 ° should be perfect in combination with the Canna fertilizer.

Canna Coco's nitrogen composition is:
Total nitrogen (N): 5.0%
Nitrate Nitrogen (NO3): 5.0%
Ammonium nitrogen (NH4): 0.1%

I would try a little carbonate boost. Maybe you try it at one plant.
Alternatively you can use sodium hydrogencarbonate to increase, buy in every supermarket. They use people for their aquarium and increase the carbonate hardness.
But supplies useless sodium.

Increase your carbonate hardness by 1 ° should give you better pH stability in the substrate. How much sodium hydrogencarbonate you have to add to I do not know.

When the correct carbonate hardness is adapted to the nitrogen, then the use of buffered Coco an advantage and the pH value in the substrate is smoothed over the entire breeding (more linear).