Thanks Crawdaddy for this input, unfortunately i had little new spot on new leaves.
Ok changed the water yesterday and feeded for EC 0.34. So not a classical nutrient burn. A level of 0.9 i can understand but here just with a 0.34 which represent 40 % of recommended for the third week. Umh. !!
Also Element One is just a roots booster.
- Boosts the roots of your plants
- Promotes their adaption to the environment
- Reinforces the root system for vigorous and productive plants
Tap water problem ?, um asked my local growshop and nobody as real water problems.
I had a deep look in the bottom of the Element 1 Bottle and arg, a solid white stuff that looks like some limestone. and lot's of micro-crystals floating in the solution. I think the product turned bad because it's 7 month old and (i store my products in a dark box now) was stored near my first futur hermies and of course under a 250W CFL and often 90 F.
Changed water again of course, ph 5.8 and 5 Ml for 5 litres of Element 2, and new bottle.
EC : 0.35
PH : 5.8
Temp : 76 F
RH : 55 %
And now yesterday today show !
And XXXXX spots :