# 1st Coco grow / Yellowing **URL:** \ **Category:** Seedling\ **Tags:** nutes, indoor-grow\ **Created:** [February 2, 2025, 9:18pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486 "2025-02-02T21:18:28Z")\ **Posts on this page:** 16\ **Page:** 1
**Author:** ![Drewincincy](https://avatars.discourse-cdn.com/v4/letter/d/54ee81/32.png) [@Drewincincy](https://ilgmforum.com/u/Drewincincy)\ **Post date:** [February 2, 2025, 9:18pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/1 "2025-02-02T21:18:28Z")
![coco1](https://global.discourse-cdn.com/growingmarijuana/original/4X/0/1/3/01359e9abb6bd7a74c8d475a50bab94222c3f338.jpeg) ![coc2](https://global.discourse-cdn.com/growingmarijuana/original/4X/c/c/f/ccfd72d94fef2ea6244f9e9171c1f844616e352f.jpeg) ![coco3](https://global.discourse-cdn.com/growingmarijuana/original/4X/d/f/6/df646ab29e3cdedcd1587dae9230980b39ae3391.jpeg) ![coco4](https://global.discourse-cdn.com/growingmarijuana/original/4X/7/1/c/71c97019d8fa086f1cee920946ca083cff35c388.jpeg) Hey Guys, I’m seeing some yellowing in my coco coir / perlite grow in solo cups. Some seem to be doing ok (8 days old) and the two oldest (10 days) have some yellowing starting and drooping to the leaves. I began nutrients a few days ago at 1/4 strength Advanced Nutrients at about 6 PH. (Distilled water) I’m using the cheap testing with the tube adding 3 drops and getting a color so it’s iffy. hTe PPM reading was 182. I am giving about 30 ml in a circle around the seedling every other day. Not sure if I’m not giving enough nutes, an over water issue or what? Any help is appreciated. ---
**Author:** ![patrick1960](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/patrick1960/32/1226032_2.png) [@patrick1960](https://ilgmforum.com/u/patrick1960)\ **Post date:** [February 2, 2025, 9:25pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/2 "2025-02-02T21:25:04Z")
I would start watering with nutes daily. First leaves coming in and roots are going down. I start in solos and at your stage I use a 60ml syringe and fill it a few times til I see a bit of water running out of the bottom. As your plant proceeds, watering to runoff will become important. You maybe could go half strength and monitor a few days. In coco over watering is not much of a concern. The coco should not go dry. Get a good ph and ec tool. ---
**Author:** ![Drewincincy](https://avatars.discourse-cdn.com/v4/letter/d/54ee81/32.png) [@Drewincincy](https://ilgmforum.com/u/Drewincincy)\ **Post date:** [February 2, 2025, 9:29pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/3 "2025-02-02T21:29:21Z")
Ok, thank you. I was afraid to get too aggressive with the nutes and with the older ones yellowing it seems logical. ---
**Author:** ![patrick1960](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/patrick1960/32/1226032_2.png) [@patrick1960](https://ilgmforum.com/u/patrick1960)\ **Post date:** [February 2, 2025, 9:30pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/4 "2025-02-02T21:30:27Z")
Google cocoforcannabis. All the knowledge you need to grow in coco. Good luck, I switched to coco in auto pots and love it. ---
**Author:** ![Underthestairs](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/underthestairs/32/689635_2.png) [@Underthestairs](https://ilgmforum.com/u/Underthestairs)\ **Post date:** [February 3, 2025, 1:39pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/5 "2025-02-03T13:39:20Z")
Coco should be fed at least close to full strength from start to finish. Up your PPM to around 1000 and keep that pH between 5.8-6.0 🤘 Accurate pH meter is crucial for success in Coco. ---
**Author:** ![Drewincincy](https://avatars.discourse-cdn.com/v4/letter/d/54ee81/32.png) [@Drewincincy](https://ilgmforum.com/u/Drewincincy)\ **Post date:** [February 4, 2025, 1:10am UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/6 "2025-02-04T01:10:32Z")
1000 PPM’s already? Wow, Ok. Do you have a recommendation for a PH meter under a $100? I keep reading that most are unreliable unless they are very expensive. ---
**Author:** ![Underthestairs](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/underthestairs/32/689635_2.png) [@Underthestairs](https://ilgmforum.com/u/Underthestairs)\ **Post date:** [February 4, 2025, 1:56am UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/7 "2025-02-04T01:56:14Z")
I just got an Apera pH 60 I think it was around 65$? Most people around here that have one find it sufficient ---
**Author:** ![patrick1960](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/patrick1960/32/1226032_2.png) [@patrick1960](https://ilgmforum.com/u/patrick1960)\ **Post date:** [February 4, 2025, 1:56am UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/8 "2025-02-04T01:56:30Z")
Your EC and PH are important. I have used Apera, Blue Lab and an ACI combo pen for backup. You can get both from reputable companies for about 100. I know that @lostgirl has a set that she likes. As for feed I would go with the directions for your nutes. I use Mega Crop One Part and in early veg I am at 550 ppm plus 100 from tap, so about 650, that is what they recommend for early veg. I do adjust a bit based on how they look. There are Jacks 123 users that go full strength 1000 ppm pretty early. It depends what nutes you are using. ![IMG_4425](https://global.discourse-cdn.com/growingmarijuana/original/4X/0/e/6/0e6c294608e6a63d2c82552b6ff767f318f03b3b.jpeg) ![IMG_4426](https://global.discourse-cdn.com/growingmarijuana/original/4X/1/b/5/1b52b5d6493291d831956d867b6c5cde913d974b.jpeg) ---
**Author:** ![Underthestairs](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/underthestairs/32/689635_2.png) [@Underthestairs](https://ilgmforum.com/u/Underthestairs)\ **Post date:** [February 4, 2025, 1:58am UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/9 "2025-02-04T01:58:33Z")
> [@patrick1960](#): > > There are Jacks 321 I guess that’s fair. 😂 That’s what I use. But I would get up higher, your plant is hungry. ---
**Author:** ![Fritzy](https://avatars.discourse-cdn.com/v4/letter/f/dbc845/32.png) [@Fritzy](https://ilgmforum.com/u/Fritzy)\ **Post date:** [February 4, 2025, 3:04am UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/10 "2025-02-04T03:04:10Z")
I think it all depends on your nutes. I use canna A and B with tap water with coco. If i even go near 1000ppm with most strains I get nitrogen toxcisity within a day or 2. But you gotta feel it out man. Better to air on the side of caution, better to see a little yellow then wake up to plants fried imo. Goodluck ---
**Author:** ![Underthestairs](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/underthestairs/32/689635_2.png) [@Underthestairs](https://ilgmforum.com/u/Underthestairs)\ **Post date:** [February 4, 2025, 9:48am UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/11 "2025-02-04T09:48:49Z")
Jack’s 321 feels a little like a cheat code ---
**Author:** ![Fritzy](https://avatars.discourse-cdn.com/v4/letter/f/dbc845/32.png) [@Fritzy](https://ilgmforum.com/u/Fritzy)\ **Post date:** [February 4, 2025, 2:22pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/12 "2025-02-04T14:22:24Z")
Ya if it works for you dude rock on. I have been hearing more about Jacks on here. I have no experience with it. Idk what it is about canna nutes but if i go higher that 50% there recommend strength i see issues. 770 to 840ppm is the sweet spot for me. Maybe is cause my tap water is 350ppm to start idk. ---
**Author:** ![Underthestairs](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/underthestairs/32/689635_2.png) [@Underthestairs](https://ilgmforum.com/u/Underthestairs)\ **Post date:** [February 4, 2025, 2:30pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/13 "2025-02-04T14:30:48Z")
I run an a/o filter to my res and mix Jack’s at between 1050 and 1100, no runoff. On clones, seedlings, veg, flower… it makes it so simple. I keep a huge bucket full of feed, all I do is pH it. ---
**Author:** ![Bonjoyle](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/bonjoyle/32/711825_2.png) [@Bonjoyle](https://ilgmforum.com/u/Bonjoyle)\ **Post date:** [February 4, 2025, 5:07pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/14 "2025-02-04T17:07:20Z")
> [@Fritzy](#): > > Maybe is cause my tap water is 350ppm Yes, you have to add your waters starting PPM to what you add in nutes. So you should only be adding about 550-600 ppms when feeding. ---
**Author:** ![Drewincincy](https://avatars.discourse-cdn.com/v4/letter/d/54ee81/32.png) [@Drewincincy](https://ilgmforum.com/u/Drewincincy)\ **Post date:** [February 4, 2025, 7:28pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/15 "2025-02-04T19:28:43Z")
Thank you ---
**Author:** ![Fritzy](https://avatars.discourse-cdn.com/v4/letter/f/dbc845/32.png) [@Fritzy](https://ilgmforum.com/u/Fritzy)\ **Post date:** [February 4, 2025, 9:57pm UTC](https://ilgmforum.com/t/1st-coco-grow-yellowing/117486/16 "2025-02-04T21:57:06Z")
I figured that out, i have heard and seen may arguments about that. I have made up my own nute charts and how much each ml/gal increases EC/ppm.When my trenchon stick say what i need i stop. That EC stick is awesome, thanks for the information