check your pH, Mg can be locked out if too acidic... lightmix doesnt have much buffer in it... there's salty residue on some of your leaves that's not so helpful.Plagron light
You bet your sweet buds I saved these. Thank youThis might help
Water with Epsom+Cal mag you suggest?Well to the OP here’s some help.
You suffering magnesium deficiency. Leaves won’t look better but won’t progress.
Give 1tsp per gallon of Epsom salts until symptoms stop,
Also introducing some calmag at 1/2 strength to balance out the magnesium.
The feeding I give them is at 6.6ph. 2L for 15L of soil. I think pH of soil has to be ok. I miss something that I can't figure out now.check your pH, Mg can be locked out if too acidic... lightmix doesnt have much buffer in it... there's salty residue on some of your leaves that's not so helpful.
Old fanleaves wont heal back, just feed mineralically fron now on
Gin is my drink. I did foliar for the mag def. I used the same feeding in previous grow on glueberry og and did 1.2g/w. If I count the mold loss 1.3g/w. Now this shit happens. I am thinking to raise the light a bit and keep feeding as I do. But I cannot get out of my mind that is something wrong with PK.Sorry @Leon1111 but it's Saturday and I started hitting the Gin a little early.
What are growing in? Soil, coco, peat?
And why are you spraying them with sulfur when they're in flower? Looks like residue on some of the leaves.
Same feeding previous growSorry @Leon1111 but it's Saturday and I started hitting the Gin a little early.
What are growing in? Soil, coco, peat?
And why are you spraying them with sulfur when they're in flower? Looks like residue on some of the leaves.
Yes - you need higher Mag and cal in the fruiting phase as they demand more. Also NP and K hinder Mag/Cal. Since we up our P/K in flower we need to add our cal/mag to balance the nutrients.Water with Epsom+Cal mag you suggest?
It is to do with PK and there effects on magnesium. This chart is really handy.Gin is my drink. I did foliar for the mag def. I used the same feeding in previous grow on glueberry og and did 1.2g/w. If I count the mold loss 1.3g/w. Now this shit happens. I am thinking to raise the light a bit and keep feeding as I do. But I cannot get out of my mind that is something wrong with PK.
The leaves have the yellowing between veins of mag def but they also have this browning on veins. That is what confuses me.It is to do with PK and there effects on magnesium. This chart is really handy.
View attachment 4730314
those dead patches are ph fluctuations. Most times they are random and aren’t bothersome unless they keep spreading.The leaves have the yellowing between veins of mag def but they also have this browning on veins. That is what confuses me.
15l soil should hold approx. 5l of water... you are either watering not fully, or much too often... if the medium is too moist for a prolonged time then this can cause lockouts as well, esp. with Ca & Mg.2L for 15L of soil.
I was going to suggest the same thing - I water 5 gallon fabric in dirt every 48 hours, I use 1.5 gallons of water per plant. To prevent salt buildup, I do two rounds of half gallon each containing the Tiger Bloom (and Grow Big as needed) fertilizer, cal-mag, Big Bloom, Sweet and Sticky, PH down to 6.50. I then wait 30-60 minutes before I do a final half gallon with just Cal Mag and PH Down to 6.50, then vacuum the runoff water and dump down the drain.15l soil should hold approx. 5l of water... you are either watering not fully, or much too often... if the medium is too moist for a prolonged time then this can cause lockouts as well, esp. with Ca & Mg.
I'd use proper Epsom Salt for leaf application, I've even seen greening up of fanleaves in flower using this, but it was like RO + EC 1.0 in Epsom every second day, for a week, that's tough shit.
For 40days old 2L is enough. More than 2.5L starts runoff.15l soil should hold approx. 5l of water... you are either watering not fully, or much too often... if the medium is too moist for a prolonged time then this can cause lockouts as well, esp. with Ca & Mg.
I'd use proper Epsom Salt for leaf application, I've even seen greening up of fanleaves in flower using this, but it was like RO + EC 1.0 in Epsom every second day, for a week, that's tough shit.
I give them 2L every 48 hours. More than 2.5L they have runoff. But is it safe Epsom foliar in flowering. Also Epsom + Cal mag?15l soil should hold approx. 5l of water... you are either watering not fully, or much too often... if the medium is too moist for a prolonged time then this can cause lockouts as well, esp. with Ca & Mg.
I'd use proper Epsom Salt for leaf application, I've even seen greening up of fanleaves in flower using this, but it was like RO + EC 1.0 in Epsom every second day, for a week, that's tough shit.
For 40days old 2L is enough. More than 2.5L starts runoff.
but the pot isn't light at that time, you could save yourself some hassle and just let it dry out more, and observe a correct dry-water cylce. It is possible, when the rootsystem is fully established, entirely filling the pot, to water more often, esp. under strong lights, but seeing you have these problems it's best to stick to the standard rules.I give them 2L every 48 hours.
It's not the Epsom that's problematic but rather the water and increased rH that may provoke mold....But is it safe Epsom foliar in flowering.
Calmag in your water is enough, a good product should have a ca:Mg ratio of 3:1 - 2:1. One can add a bit of Epsom when the plants call for it, but it's more easy for plants to just stick with what works. Constantly changing stuff does more damage than good IMO...Also Epsom + Cal mag?
Yeah, 20% runoff guarantees the old nutes gets out of the pot... plants don't always take in all of that stuff, they have some minor selective control and the roots can also "spit out" excess/unwanted stuff back - which shouldn't accumulate in the root zone.I was going to suggest the same thing - I water 5 gallon fabric in dirt every 48 hours, I use 1.5 gallons of water per plant. To prevent salt buildup, I do two rounds of half gallon each containing the Tiger Bloom (and Grow Big as needed) fertilizer, cal-mag, Big Bloom, Sweet and Sticky, PH down to 6.50. I then wait 30-60 minutes before I do a final half gallon with just Cal Mag and PH Down to 6.50, then vacuum the runoff water and dump down the drain.
The goal is 20% runoff water, at 6 gallons total that would be 1.2 gallons. I get at least a gallon of runoff between the four plants, every single time. You are much better off having too much runoff than not enough. I would much rather waste money on a little too much fertilizer washed down the drain, than locking out the nutrients by not watering to runoff.
I reduce the fertilizer the last two weeks of flower, but maintain the sugar, and just use plain water for the last week to completely flush the plants.
Does it work? This was my last batch, you be the judge: