Kabakcilar
Active Member
Hello, its leaves have been turning yellow for a long time and sometimes they stop, then they turn yellow, darken and dry again. What could be causing this? Please help me ?
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Give us your details.Hello, its leaves have been turning yellow for a long time and sometimes they stop, then they turn yellow, darken and dry again. What could be causing this? Please help me ?
Looks like you have a calcium issue but you're going to have to give us some background for us to help. Too many things it could be.
Tell us what you're growing in for a soil mix and what you feed them with for starters.
Give us your details.
Environment
Lighting
Food
Grow medium
Age
Watering schedule
I go along with @Azimuth in that it looks like a shortage of Calcium-Magnesium nutrients causing problems.I give biobizz grow, haven, bloom, topmax, algamic and cannaboost, soil plagron light mix in the 2nd week of flowering.
I go along with @Azimuth in that it looks like a shortage of Calcium-Magnesium nutrients causing problems.
Couple of questions. Which of the products listed supplies the Calcium? Sometimes fertilizer companies will mix Calcium in with one of the other fertilizers. I have seen a Calcium fertilizer from BioBizz but it is not mentioned in the list.
Are you using the soil feeding chart as printed by BioBizz or have you customized it? Or using their hydroponic feeding schedule.
Looks like you have a calcium issue but you're going to have to give us some background for us to help. Too many things it could be.
Tell us what you're growing in for a soil mix and what you feed them with for starters.
Ok, thanks. I'll have a look, but think about starting a diary on here and adding a link to it in your sig.Growdiaries
growdiaries.com
biobizz CalMag I give 2 ml per liter 3 times in 39 days, I give 2.5 liters of water per pot, I gave 5 ml, don't you think it is enough? pot 18 litersLooks to me like a calcium deficiency but also that you're getting lots of advice on that other site and I couldn't tell whether or not you've made any of the suggested changes.
So, I'm back to: start a grow journal on this site including the grow basics (grow medium, nutrients used, tent temp and humidity, stuff like that) and well get you sorted out.
I give biobizz grow, haven, bloom, topmax, algamic and cannaboost, soil plagron light mix in the 2nd week of flowering.
There is yellowing and drying at the bottom of every plant and brown spots appear on every plant. I stopped giving biobizz grow and heaven, the soil dries in 4-5 days, I divided the nutrients into 2, I give biobizz bloom, algamic and canna boost. After 4 days, I give biozbizz topmax, activera and microbes, do you think? What should be done?The top of the plants look good in the first picture. Are those yellowed leaves on the bottom of the plants? Is that a rot bag (for CO2) on the left side of the tent? And is that plant in the second pic with the most yellow leaves underneath that bag?
I gave biobizz CalMag 9 days ago, adding 5ml CalMag to 2.5 liters of water, and I have given biobizz CalMag 3 times so far, and today I gave 5ml CalMag to 2.5 liters of water.
You are not following the BioBizz feeding schedule or chart. The amount being mixed with water is close enough but you are supposed to be giving it to the plants at least once a week. Giving a dose every 10 days is why the problem started.biobizz CalMag I give 2 ml per liter 3 times in 39 days, I give 2.5 liters of water per pot, I gave 5 ml, don't you think it is enough?
and in message #4 you wrote....There is yellowing and drying at the bottom of every plant and brown spots appear on every plant. I stopped giving biobizz grow and heaven,....
Any new signs of yellowing showing up in leaves at this time can be a sign that the plant is now needing even more Nitrogen to build the flower buds. If the plant cannot get enough from the media or soil it is growing in then it will take it from existing fan leaves where it was stored and moves it to the new flowering growth. Even more yellowing of leaves is the result.... in the 2nd week of flowering.
Look at the chart and the BioBizz Light MIx soil that you are using is at the bottom.I use biobizz soil table
You posted this while I was finishing up my msg just above yours.Calcium deficiency only presents in new growth not old. Calcium is immobile so the plant will not pull it from one area to feed another. Mag, NP and K present deficiency in old growth. They are all mobile so the plant takes from old low growth to feed new growth.
If you are pumping in high P it can cause N and mag to lock out, blocking N and mag. High levels of calcium will also block mag.
I am assuming you have a micro nutrient formula in the mix. Manganese is the only micro that could possibly be involved but vary unlikely. Unless it's value is absolute 0 somehow.
I'll type slower next time wings.You posted this while I was finishing up my msg just above yours.
His Calcium amounts are about half of what it recommended so unlikely that any blockage or lock-out is taking place. I have the feeling that the plant(s) have already started pulling the mobile nutrients since the BioBizz Grow was stopped.
As for the micro-nutrient formula that is probably the BioBizz Heaven which was also stopped.