Best Answer - Posted by
Forest
"ive had sth that might be the same as you, after much researching:
i found out my home water turned out to have to much cal (water supply came from lime stone bed rock) to much cal which in turn will lock out mg and you will get mg def in every grow(strain dependent)
i grew active hydro and passive hydro coco and hempy buckets, same problem every time was tiny brown spotting on leaves is that the same as you ?
my back ground ec was sth like .7/.8
so chucking calmag at it wont do anything but prob make it worse ,this i found out after chucking epsoms and then i bought a liter of calmag still got the problem
so i decided to buy a ro unit 60 quid from ebay and it fits under the sink( if needed) and you can have it so you can turn it on and off my water from the unit was zero ec and it changed my growing no more problems of that nature
you will need nutes for soft water but you can still use the hard water nutes, but you will need to add cal mag to them best nutes ive used are dutch master gold range simple and great results,
once you start with RO water (pure) you have so much more control over your growing and no chemicals that you dont want in there
hope that helps
Forest
my water was 6,9 ph out of the tap and rose to 7.9 after a few hours which is the co2 leaving the water much more stable after its been stood
for now can i suggest that you ph down lower then you are doing, you will improve things a bit by doing that 5.8-6.0 for dirt and 5.3-5,5 for hydro will help"
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