I’m a first time grower and I’m entering the 16th day for my Purple Lemonade auto. I’m growing in a 2x2x6 ac infinity tent.
5 gal fabric pots with coast of Maine stonington blend.
I’ve only watered with tap water which when tested it was 7.9-8.2 ph. I haven’t used any ph down as I got recommended that living soil regulates ph but I’m not entirely sure.
Around the second week, I started noticing some yellowing on the first newly grown leaves. Those turned from a yellow at first to burnt looking. After some research on this forum, I’m guessing nutrient burn from the soil or a mistake I’ve made along the way.
The plant since seedling has been very light green, which is odd to me since other grow logs of the same strain has them as a dark green with a bushy leaf structure.
Wondering if I’m doing watering incorrectly. The seedling is growing quickly but it seems frail leaf wise. Should I ph down to 6.5 for watering? Would recharge help in anyway? I have dry amendments for later in the grow, so I’m only watering for now.
Can anyone help me diagnose these symptoms so I can understand the mistake I made.
I started out by only misting my seedling because the coast of Maine stonington soil can almost soaked. It didn’t need a watering until pretty far in. Then I started at around 300ml, then 500ml, and recently switching to a 1L for the last two waterings. I space the waterings 2-3 days between each other based on how dry the top of the soil is getting.
Thank you both for the reply and recommendations. I will PH to 6.5 going forward.
Do you think the yellowing/burnt spots are related to PH / Underwater? Based on LiesGrow’s comment, I will try to be more aware of how much I’m watering.
Based on the images, do you think the plant has the ability to recover?
A good organic soil like Coast of Main does not require you to adjust the ph of the water as the biology in the soil buffers the ph but with a ph that high in your water id recommend lowering the ph down to the 6.5-7.0 range also best way to grow in organic soil is to keep the soil at all times so the organic amendments and the living soil biology has a ideal environment to thrive in a good rule of thumb when watering organic soil is take the volume of soil times 5% so 5 gallon pot of soil times 5% would be .25 gallons so 4 cups of water essentially its best to water less more often with organic soil so this may be every day to every other day its also good to water in 10% atleast 1 time per week do you know what kind of nutrients you plan of using once you need to start feeding?
I ran in Sohum living supposedly water only but i was getting yellow leaves so i emailed them they asked what was my PH going in told them my tap water is 7.8 they said adjust to 6.8 never had to add any nutes
Sorry this is not true…you should always ph your water. The organic material and mineral content of quality organic soils will certainly help buffer ph, but it can’t do that forever for you.
I usually run SoHum or M3 (Michigan made mix). I love them both, but I’ve never gotten a full cycle out of either of these mixes…unless i oversize the pots…which i don’t want to do for many reasons.
Ive ran the same Happy Frog soil i turned into a organic living soil for the last 2yrs straight and havent touched a ph meter in the last two years if the beneficial Biology that makes living soil alive is present they are who do the ph buffering not the amendments by themselves so ill stick with my statement
Plant is in veg now, you probably won’t have to give any nutrients until the start of flower except maybe some cal mag. Blends like COM are supposed to be good for 4-6 weeks and you don’t want to burn your plants. They seem to be magnesium deficient
Thanks for the advice, looking up Mag def it look very similar and spot on to my symptoms. Do you know if using Calmag on living soil would work? I’ve been watering with 6.5-7 PH Tap water only. Plant has been very light lime-green since birth, so I wonder if the soil itself was too wet or the roots aren’t able to pull in mag properly.
I did mention above that I watered originally without PH’ing, so I wonder if that contributed to creating a bad environment in the soil for the roots.
I would try to keep ph between 6.0 and 6.5, cal mag will be fine to use or maybe even just mix in some a little epsom salt next time you water for straight magnesium
