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That should be good. As well as expensive hahaha. I have heard good things about blue lab. Thanks.

You are totally right. My yield will worth it no matter what. Anything is better than the illegal market.

That's the point. My meter is awful. I calibrated for 7.01, cleaned it, and then calibrated for 4.01. But after cleaning and putting back on the 7, it did not measure 7 any more. For sure the drop meter are better than this shit.

Too late I guess. I freaked out a bit. But I only flushed Hindu Kush.

Here in Brazil the company that distributes the bottles must inform the pH and other stuff in the bottle. I know that's not the ideal. But it I can do it for now. :/

I kind of freaked out a little bit. Hehehe Today was about time to water them at least. And Actually, I have flushed only the Hindu Kush, which is the one with the more stains on the leaves. The blue dreams are fine. Only one leave with stain. I attached some pictures of the flowers. Some...

Not good, not good! @Alter Jean @osowhom I watered the Hindu Kush (the one with more stains) with a bottled mineral water with pH 6.6 and tds 30ppm (which I use to calibrate my meter). The runoff pH was 5.8 and tds was 180ppm, the water had a light green tone. I am thinking to buy and use a...

@Alter Jean For now, I took off the uvb lamp and also took off a kind of "lens" of the lamps. They were concentrating the light a lot in some spots. About the pH, I was reading around Web. I am thinking to compare the pH of my watering to the runoff water to have an idea of the soil pH...

@Alter Jean , I don't get what you mean. hehe sorry

good to know @osowhom . I will invest in a better PH meter next grow for sure! Mine is annoying me a lot! Today I need to water them, I will try to take care of of this.

Thanks for the help @Alter Jean . The one I was using is a ReptiGlo 5.0. I decided to use this time because in my first grow the flower was big but not dense and not too many trichomes. Considering the damage on the leaves. Better to leave out of the grow. Just for caution. Tomorrow I will try...

The leaves on the bottom of the plants are fine. And I noticed the damaged leaves are below of one of the bigger lamps. Pics..

Thanks guys! I Took off the uvb light. Hope only that will avoid further problems. In any case, I attached more pictures of the plants. I turned off most of the red light for better visual.

@curious2garden @Rozgreenburn I am using around 200 w of Chinese led lights plus one reptile uvb lamp. I was using the uvb in a inproper way. According to some sources it should be used for only 2-4 hour a day. I was using 12h with the others. I add nutrient once in a week. 0.4g powder feeding...

Hello everyone. SInce yesterday I have noticed some strange things in the leaves. The plants are in their 5th week of flowering stage. I took a look at the internet and it seems that it magnesium deficiency, which can be caused by low pH levels. I am using the fertiliser Powder Feeding. I am...

Thanks @Tracker. I avoid to buy the led lamps with ridiculous power. But indeed it is hard to say that the power they say it is the real one. I though about checking the current but do not have the device now. Thank @GrowingAbroad. Good to know that the flower grows until the 6th week. It...

Hello everyone. Its my second grow experience. I would like to know how it is going from some experienced growers. So, please, give me some feedback I am growing 1 hindu kush (in which I did some basic LST) and 2 Blue Dreams (one I did a basic top and the other I have not done anything). They...

@Mattcheck hahaha. I was thinking while taking a look at the grow. I have 2 big LED lamps. And they have a kind of lens that focus the light. Take a look below. The plants were a bit closer to the lights than it is shown in the figure. And the leaves that are affected is highlighted in the...

I saw a very similar effect about light burn in the web. Take a look source: https://www.mrgrowit.com/post/light-burn-light-stress-in-cannabis-plants

Hello everyone. I have 2 blue dreams and 1 hindu kush in the flowering period (~4weeks). Yesterday I have noticed some burn spots in the leaves. I am not sure if it is a nutrient burn or light burn. So, I tried to avoid both problems, I have flushed them and tried to increase the distance...