Aerides significant dying tips

[Longroots]

For some reason these dying tips on my Aerides keep coming back o 2 different leaves. You can see where I've cut the whatever this is off before, a clear inch or 2 from any visible sign down the leaf (then coated the tip in cinnamon powder to callous it). However it keeps travelling down the leaf.

If anyone knows what this is please tell me, I dread to think what will happen if it gets to the stem.

[estación seca]

Unless it's photographic artifact, the leaves are yellowish green. That suggests far too much light, or some other problem.

What are your growing conditions? Temperatures day/night? Humidity? Is it potted or mounted? How are you watering?

[Longroots]

Its in semi hydroponics, it chucked out tons of new roots and has properly taken to the pot. Perhaps it is under too much light, my grow lights are pretty strong. Day/night is about 17/21c. Humidity is standard household humidity so about 45%.

[Roberta]

Aerides do want less light than Vandas. I grow them in filtered sun/bright shade.

[Shadeflower]

get a bottle of this on Amazon:

Add it at half the amount to your rainmix, so for every gram of rainmix you use, you add 0.5 ml of PK. Then let us know in a couple months if the brown tips have stopped appearing. It worked for me. I'd recommend buying 1ml syringes to measure small doses.

Do you use any seaweed and how much? Seaweed extract will help too so if you aren't already, add seaweed for added micronutrients with every watering.

Something like 1ml/l of biobizz alg-a-mic or maxicrop or doff seaweed are all good.

[Roberta]

The spot in the second photo actually looks like sunburn. So that would indicate 'way too much light.

[Longroots]

When I get paid I'll get some of that, I don't add seaweed extract, but I have heard I should.

I've moved the light further away also

[Roberta]

Looking at the label of that "secret sauce", I don't see much that would apply to orchids. How does one determine a "week of peak demand" in a slow-growing orchid? Orchids don't respond to much of anything in just one week. One can't push flowering. Fruiting? Looks to me like it is more oriented toward fast-growing crops. The nutrients that I can see might be deficient in an orchid grown with too much light might be nitrogen - with more light the plant might demand more if it is growing rapidly, and possibly magnesium which is needed to make chorophyll. So-called bloom-booster formulas with higher phosphorus and potassium relative to nitrogen are just nitrogen-deficient, so maybe the plant doesn't grow as fast. One can get the same effect on blooming by simply reducing fertilizer during periods of slow growth.

[estación seca]

I think all the problems you see are caused by too much light, and heat from your lights.

[Shadeflower]

Roberta, don't worry about what it says on the bottle and you are right there is nothing special about it or unique. You can buy it under any brand in any hydroponic shop in any country around the world, probably one of the easiest plant product to buy yet people read, "needed for blooming" - I have black spots, I don't need none of that.

I'll take a picture of what I had going and post it in a bit.

When the scientists go on about how much percent better off I am having some experimental vaccine I kind of shut off too and think I don't need that but they call me stupid and ignorant and even selfish for not understanding.

I don't want to take it off topic but this just reminded me of my belief that I don't understand what the scientists are trying to sell me so I'll leave it. After all prince charles and camilla have been triple vaccinated and both of them are currently ill. My sister would say but they won't die from it. Who knows. I do not trust the scientists... I know that much. I think they are saying 4 doses will still protect. Someone wonder if it will be 5 shots after that?

I will take a picture of one of the problems I managed to prevent, one of many. I would have started losing plants imo. Anyway growing is so much more fun when your leaves aren't eating themselves leaving a trail of black questionmarks behind.

So if someone comes along and says don't worry, I have the cure it can be easy to dismiss them as the latest snakejuice like I do like to do at times too but I have had the same problem. A sunburn does not progress after you cut it away after all - it might look like a sunburn but so will the picture I will post. I just need to take the dog out first....

potassium deficiency: