I am growing by bubbleponics, roots sitting in water in reservoir below. I m using Advanced nutrient Micro Grow & Bloom...... No other supplements other than this . I prepared solution in 15 litres of filtered water having initial Ph of 6.80 &PPm is 122. After mixing 4 ml each to per litre of water, of the three nutes, the solution had Ph of 6.0 &PPM 980 on the day. Next day it is 6.30 & 998. Next day it becomes 6.10 & 1040. Thereafter it falls to 5.90 & 1040. Again next day it has gone down to 5.70 & ppm stays almost same to 1050. So only PH is getting disturbed &this has happened for third time
. 4 days back when i saw these spots in night, i measured Ph &it had fallen to 5.0 , where as it was 5.50 in morning. So i changed the reservoir solution immediately & replaced it with fresh solution. Again the same thing is happening as mentioned in my earlier details mentioned above. Ryt now PH is 5.70 where as it was 5.90 in morning. I am unable to think for any reaaon for this fall in PH.
May be this has caused the spots on leaf ?
...
I am unable to get the way to maintain it even though the nute manufacturer claims it that the nutes maintain PH automatically.
Plz help n suggest.....
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