Grow Mediums hi its smerkey trying dwc and led/ cfl for the first time dp thinkdifferent

[smerkey]

Hi mate when u fill rez up with just ph water wat level is it best at. I'm thinkin just over net pot. Btw then u pt layer ov clay pebble and then root cube. Does the water have to touch root cube or be at same level as top ov first layer ov clay pebble and also I hav a ppm meter. My mate said I Cud use it to test my ec is that true. My ec tester wnt work iv ordered new one by didn't find out until after I'd orderd it that it Cud take 3 weeks to arive

 

[DWCocha]

Hi mate when u fill rez up with just ph water wat level is it best at. I'm thinkin just over net pot. Btw then u pt layer ov clay pebble and then root cube. Does the water have to touch root cube or be at same level as top ov first layer ov clay pebble and also I hav a ppm meter. My mate said I Cud use it to test my ec is that true. My ec tester wnt work iv ordered new one by didn't find out until after I'd orderd it that it Cud take 3 weeks to arive

Hi bud .... I would put 1-2" of pebbles in the net basket ...then your cube with seedling really carefully ....then fill around the cube .I have the water level just above the base of the basket (around an inch below the cube) .Once everything is in place ,after a few hours ,check the cube for how wet it is ....should be damp ,not soaked or dry.

Yup you can use a PPM meter as EC ...heres a table for conversion ...you need to know if yours is EU or US ?. Then its easy to calculate EC :Sharing One:

 

[Casper79]

Thanks dude :Sharing One:

 

[smerkey]

How can u tell wich is eu or us mine says tds meter ( hold ) it take water temp and it was bought from hydro shop in UK

 

[smerkey]

Thanks mate Cud u tell me how I put photos up on my thread I use a HTC desire phn I can then just put up photo ov ppm tester so u guys can tell me if its u s or eu. Thanks mate

 

[DWCocha]

How can u tell wich is eu or us mine says tds meter ( hold ) it take water temp and it was bought from hydro shop in UK

Bud ,theres so many out there I cant tell you with that info .... read the instructions & they may say if its a "hanna" - "eu" ect .

Thanks mate Cud u tell me how I put photos up on my thread I use a HTC desire phn I can then just put up photo ov ppm tester so u guys can tell me if its u s or eu. Thanks mate

Lol ....BLUUUUUEEEEEE ....Im not to good with the techy stuff bro & dont use a phone .... I think tapatalk might be the app you need but am not sure ?.... hopefully someone will look in & help you out with that bro & I'll be able to see the tds meter !

 

[blue]

Lol ....BLUUUUUEEEEEE .

Got it Vira

Hi smerkey, I'll PM you some details. Should only take 10 mins or so

edit: :check: sent

 

[blue]

Hi again Smerkey

I looked into your TDS meter - I've never used one but found this handy article explaining it all and how to convert to EC PPM etc.
It's a bit of a read, and if any of it is wrong, I'm sire someone will chime in and set it straight

What does a TDS or EC meter measure?

Answer: The electrical conductivity (EC) of your nutrient results from motion of mineral ions when the meter applies an electrical voltage. The ppM value of a sodium chloride solution happens to be very close to half of its conductivity value (in microSiemens/cm), so many meters display the conductivity as an equivalent NaCl amount.​

What does the term parts per million (ppm) mean?

Answer: It is a common unit for measuring the concentration of elements in the nutrient solution. One ppm is one part by weight of the mineral in one million parts of solution.​

How do I convert between TDS and EC readings?

Answer: To obtain an approximate sodium chloride TDS value, multiply the EC reading (in microSiemens/cm) by 1000 and divide by 2.

To get an EC value, multiply the ppm reading by 2 and divide by 1000.
Thus, if your EC is 1:
1*1000/2= 500 ppm.
And if your ppm is 500:
500*2/1000= 1 EC​

Is it better to use an EC or a TDS meter?

Answer: If you have plant nutrient recommendations in EC units, an EC meter is convenient. If your plant nutrient recommendations are in ppM values, a sodium chloride TDS calibration is easier to use.​

Why is conductivity of the nutrient important?

Answer: Conductivity is a measure of the strength of the nutrient solution. The higher the conductivity, the more dissolved solids there are in the solution. Delicate plants, cuttings, and seedlings can experience fertilizer burn if the conductivity is too high. Once the plants begin growing, they need a stronger nutrient solution, so conductivity must be increased by adding concentrated nutrient. Some plants prefer a milder nutrient strength, while others grow better and produce better quality fruit with a higher concentration.​

How does conductivity affect plant growth?

Answer: Conductivity is really a measure of the nutrients in the solution. Low conductivity implies a low nutrient concentration, which usually results in nutritional deficiencies and slow growth rates of your plants. One can look at the situation as a higher conductivity is more food for your plants. However, be careful of very high levels as this can burn and or kill the plant.​

What about water temperature?

Answer: Temperature of the nutrient solution should be in the range of 65 to 80 degrees Fahrenheit (18 to 26 degrees Celsius). Before adding water to your reservoir, it is a good idea to allow it to come to the same temperature as the water in the reservoir. Plants do not like rapid temperature changes, especially in the root zone. Aquarium heaters can be used to warm the nutrient solution in the winter, and look for "chillers" to cool the solution in the summer if high temperature becomes a problem.​

This should help! ^_^

 

[smerkey]

Thanks mate I've gt taptalk how do I use that

 

[blue]

Read my PM first buddy