Hmmmm.... maybe others can jump in here but it looks to me like you are seeing early signs of calcium deficiency. It also looks like they have burned tips from a little too much feed or they got a little too dry. It is hard to say without more info.
Are you pH-ing your water/feed? Also, have you fed calcium or cal-mag?
To see a World in a Grain of Sand, And a Heaven in a Wild Flower,
Hold Infinity in the palm of your hand, And Eternity in an hour.
― William Blake
It doesn't look bad, the scars are possible from something that happened long before, a leaf can get hit or slightly damaged when it's young and as it grows, so will the scar, and you may not notice it till now. If it's not happening allover or to new leaves, then it's usually nothing. Turn your leaves over and look for bugs.
It looks like it could use a Epsom salt spray, I would do that first and see them in a few days. Keep an eye on the damaged areas but I personally don't think you have to worry about.
Good luck man!! 👍
@im_sparky yeah mate ph to 5.8 6.1 usually.
Currently flushing with some cal mag for next few days going to see how I go.
@silentbutdeadly224, if your currently giving Cal/Mag then you don't need Epsom salt spray, just continue with what your feeding.
How much do you use? Is food grade ok?
If you are talking about epsom salts, many use 1/2 teaspoon to a quart or liter. Magnesium is readily absorbed and is highly mobile so you should see a change in about 24 hours. Just be sure to mist on the leaves right before lights go out or the tiny beads of liquid can work light a magnifying glass. You can make your own calcium, too, to combine with epsom salt, to make cal-mag, but it takes some time. You dissolve clean and roasted eggshells in white vinegar (1:10) (takes a week) and then strain and dilute 1:500, then add your epsom salt. Bam -- you saved yourself $50 on a gallon of cal-mag.
To see a World in a Grain of Sand, And a Heaven in a Wild Flower,
Hold Infinity in the palm of your hand, And Eternity in an hour.
― William Blake
@silentbutdeadly224, if your currently giving Cal/Mag then you don't need Epsom salt spray, just continue with what your feeding.
Woodi is right -- sorry I missed that you have started cal-mag. If that is the case, definitely don't double-up with epsom salt. Espom salt is magnesium sulfate, so that is the mag in cal-mag.
To see a World in a Grain of Sand, And a Heaven in a Wild Flower,
Hold Infinity in the palm of your hand, And Eternity in an hour.
― William Blake
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