ppm in soil ?

[killedkilleryo]

i was wondering whats a good ppm in soil during flowering .im using fox farms and ppms are real high when i mix the ferts .i know hydro any where from 1000 to 1800 is acceptable is soil the same ? and if anyone knows good specific levels for each week could you post .thanks .

 

[johnyhash]

I like to feed feed with everywater 200 - 300 ppm depending on conditions, nutrients will build up in the soil and raise the levels in the root zone.

 

[Doug_Marsh]

200-300 is low my tap is almost that, although I use RO for my plants. Through veg I try to get no higher than 1200 and towards the mid-end of flower I ramp it up to 1500-1600 and I have no problems, thats after everything is added including sensizym, ph up and nutes. It depends on what the strain can take though.

 

[nano]

For my current grow I never went higher than 700ppm, fed once a week. So far it looks no different than the grows I did earlier at around 1200ppm. I use RO water also.

 

[Delta Force]

checkin runoff values is a good place for info.......stick with the values you've used just know that salts and buildup accumulate so either 1. a periodic flush of a large volume of water to rinse those salts out bout every 4-6 weeks or 2. Use a salt leaching product like clearex or florakleen to aid in that again once every 4-6 weeks.

If ur values are slightly high its ok as soil/peat acts as a buffer and the plants take what they need as they need it as long as its PH is good...that being said do periodic runoff tests and check both your PPM and PH.......PH being more important of the two......if the plant is getting too much or too little it will tell you whether it be yellowing lower leaves saying MORE or curls and burn meaning LESS!

 

[Doug_Marsh]

Nicely done Delta