The recommendations are to flush the organics out of the pot.
If you decide to do this I recommend an inoculant for the roots to stimulate a biome as this is going to rinse the ready nutrients out that are locked up. It will take 10 days to rebuild but if it’s locked you have no choice.
Still concerned you have not developed a reason the pH went up.
This far in flower and with a low fan leaf count…
4 Likes
That could be an issue, dry amendments take 2-3 weeks to start breaking down, so when you see an issue, your way behind as most deficiencies will take same amount of time to actually show. You could flush and give them a shot of liquid nutes to get them through until dry nutes kick in, although flower is a bad time to do it. I’d really like to know why you had an upswing to start with, if @Budbrother is available, he is the man on soil, I’m all in on Promix.
5 Likes
I thought I remember reading online in multiple places that coco coir needs lower PH but for soil the run off PH up to 7 was acceptable so I was not initially alarmed when I saw the run off at 7 PH even though I put in ~6.4PH water. I can only assume it was the 444 amendments that caused the change, if I remember correctly I think the run off was the same as the PH’d water I put in at ~6.4 earlier in the grow.
Or maybe my PH meter needs to be recalibrated since its been a few months. Although the readings are always the same 9.5PH tap water down to ~6.3PH, so I dont think thats the issue.
1 Like
Im guessing the 444 amendmends maybe caused the soil PH to change, im not sure.
Do you think im far enough along the grow to let it ride until the trichomes are ready? Theres still clear trichomes but seeing some milky and a few amber.
Or is it critical to do the flush and buy liquid nutrients?
2 Likes
I have seen growers steer pH high at the last part of flower to express different colors and to stress the plant. Done with temp reductions it makes some really keen looking weed.
I have never heard or seen any evidence it increases or decreases yield or potency so I am not going to plan anything like that.
Were you able to find any of the chart recommendations? Lots of great information.
Also are you going to stay with GG ? If so recommend you search our database here for growers doing that and got the pics. See how someone who is having success does it.
On. Your pH meter. You are right that every time you do the same thing the same way it should not change. If it does it has always been stuff on the tip or a connection problem. If you " calibrate " a damaged or dirty pH meter you may actually find it will not calibrate correctly and found to be reading off.
3 Likes
3 Likes
Yeah im sticking with GG dry amendments, I reviewed that PDF your linked but im not sure what else im going to mix in yet. ill definitely be looking through some threads to see what other people are doing.
4 Likes
OK, I think we have found the root cause.! Coco will need 5.6-6.0 , I thought you were in soil, sorry, too many irons in the fire! Coco also needs frequent feeds, up to 4-5 times a day. Some get by with once a day, but most do frequent fertigation. Feeding until good runoff keeps the coco in line, I had the exact same issue in coco until Low helped me out, I wasn’t feeding often enough and dry amendments likely won’t work in coco.
4 Likes
Sorry for the miscommunication, I am growing in Fox Farms Ocean Forest soil. Not coco coir. I was basically just saying that I thought 7PH run off was within acceptable ranges. Is this true?
4 Likes
OK, bad brain day! Lol 7 is at the very top end, I keep soil at 6.2-6.7 . I think yours is slightly locked out due to the ph. Lots of folks here have went to AN nutes , their PH perfect line is chelated and doesn’t require PHing feeds.
3 Likes
If it were mine, I’d flush them back in line and give them some nutes to hold them until the GG breaks down.
4 Likes
I think I understand what you’re suggesting.
This product correct?
I dont understand what you mean by “doesnt require PHing feeds”. Can you expand on this part?
I assume what I should do is flush the soil until the run off is ~6.4PH and then use some of this AN PH Perfect product to provide immediate nutrients, while also top dressing dry amendments for sustained nutrients until the trichomes are ready?
3 Likes
Also if im flushing the soil, wont the liquid nutrients I want to pour in also just become runoff because the soil is too saturated? Or do I just need to pour it in really slowly
3 Likes
Thanks for the tag. I had a similar issue when I did an organic run. Ran outta nutrients and I hadnt given them anything to work with. If memory serves I finished the run with salts. Essentially, nutrients make ph drop. Lack of nutrients make ph rise. If you are getting a runoff of 7 and your plant is cannabalizing itself..you are outta nutes. If you are using a topdress style nutrient, you might wanna consider grabbing some liquid readily available type feed to get you along till the stuff you scratch in can get broken down. Seems like you got solid advice up above.
6 Likes
Thanks for this information Doc,
Is there something specific you recommend? Im about to buy the AN PH Perfect nutes that Growdoc recommended and flush the soil until the PH is 6.4, add the liquid nutes and top dress at the same time correct?
4 Likes
Yes, you will have to be careful not to overdo it, but the AN nutes are a combo, not just bloom. You’ll need the combo, it just mixes at different ratio for flower. It’s a three part nute system. Bloom, Micro and Grow are all used. And you might consider finishing this run with them to save all you can of the harvest.
3 Likes
Just thoughts from a caveman grower.
You are in the final weeks. Dry ammend. Not a lot of time for it to become available.
DO NOT FLUSH the girls. Will wash out life, nutes. Dry ammend. Will clear that soil forcing a restart of life and nutrient breakdown.
Too be honest, I believe you are so far in you will finish fine. Some of that fade is normal. I see very smooth fade on a lot of it. She is preparing to die. Eating the fans. Prioritizing flowers.
My suggestion is water at 6.5 for the rest of the way. Not a lot to do at the end like this. No new leaves. Flowers look solid.
Get ph in line and roll to the end.
7 Likes
Seeing that amber I think @Storm made a good suggestion.
5 Likes
Yea. The flowers really look like fire. A good cure will make that some locky smooth smoke.
Just want to add this. If you have been following the dry ammend schedule you are ALWAYS a few weeks out from adding last ammend to absorbing last ammend. Adding in last 2-3 weeks is wasting the nutes. She will keep taking what is in soil and eat herself. Some strains will eat themselves no matter how many nutes are in the soil.
6 Likes
I use Kosher Nutrients but after a full read on this thread I agree with @Storm. If you are two weeks from harvest just ride it out. Give water with at least 350ppm tds (use calmag or epsom salt to bring ro or distilled up to 350ppm) and only that. Id also re examine your watering technique. 2-3 litres ever 2-5 days isnt alot.
5 Likes