First Grow!

Looking good and healthy in the house. Good luck for a nice harvest.

Hey mate, don't think you have a cal mag issue there, speaking from experience it looks awfully like light burn more specifically your UV spectrum LEDs. Are you sure your 46cm away? Might be worth backing off the intensity a little. Your old leaves won't recover but new growth should hopefully not suffer the same fate. Just some friendly advice from someone who has made this mistake

Not necessarily. It's caused by specific LEDs in the panel I.e. the ones that omit UV wavelength thus what matters is the path of this wavelength relative to position of the leaf. When I had the issue my plants were 15-20cm away from light but I'm running 100W viparspectra so yours more powerful.

Pro grow wow

great job dude 👏

Hi.. sry, but I'm banned for 7hrs from answering Q/personal chat. But I can still comment So, you've a muncher(s). We all get them. If I were seen an odd hole/tear, that's usually down to rapid growth. Vains get pult and you get a hole r 2. But, the edges of yours have white.. so, that's either damage by grower, (clearly not, r y would you be asking a q) or damage from something having a snack on your leaves. Most probably at lights out. And when lights come on, they'll quickly move to somewhere dark. Your sub. Itsx nothing to really be worried about. All us indoor growers get them and 99% off the time. The suspect will just die of natural causes from the nutrients that we use. Especially if its synthetic or you can add silica Some strains will be targeted more than others. Its not down to resistance or anything like that. (YOU'LL HEAR THAT) but, what a more resistant strain will stand with a shield and sword. It Jst means they can withstand attacks better. But, some phenos give off a stronger leaf scent. And they tend to go for rid pungent ones. Its very minimal so much so. There's not much you can do. Nor should you bother. It's not an issue. Until its an issue. If the plants are suffering from it. Feel free to hit me up. And we'll tackle it. Sry couldn't leave this in chat or your comment. Jst don't want you getting bad advice. There's a lot of numbs answering the Q, as it's a contest. Anyways Good Growing

Silica will help build strong membrane walls in your plant. And it'll also make the munchers die and you'll have less holes. You could add sticky traps around your sub. But, chances of you catching just 1 r 2 are well, 0. Sry about add on. If I edit to much. I get a comment ban. Feel free to mes me. And ban is lifted we can chat more if you like about it. Ways you can build up a plants defences

Unfortunately like all issues with the plant we love the hints she gives us could be multiple issues. Just keep it in mind and don't stress, apart from this overall your plant looks super healthy!! 👌

Hmm sounds like you doing everything right with the light if you running 50% at that distance. See how you go, good luck 👍🏻