# Help with identifying deficiency? **URL:** \ **Category:** Troubleshooting\ **Created:** [May 4, 2023, 4:26pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591 "2023-05-04T16:26:30Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Lph008](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@Lph008](https://ilgmforum.com/u/Lph008)\ **Post date:** [May 4, 2023, 4:26pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/1 "2023-05-04T16:26:30Z")
I have an auto that is on week 8 since it popped and week 4 of flower. The leaves are dying, it looks good otherwise. 20/4 light schedule, ff happy frog, 3 gallon, jacks 3-2-1 and great white. Thats it. Temps 70-80 humidity 45%, 2 fans and exhaust fan. 2 150w lights in 2x4x ![20230504_115512](https://global.discourse-cdn.com/growingmarijuana/original/4X/7/d/c/7dc5b1676ba02a8b9d6af54d250daecbc3c8e499.jpeg) ![20230504_115504](https://global.discourse-cdn.com/growingmarijuana/original/4X/2/5/b/25b117ef29a83c785ec8a39764511b7dc0888e19.jpeg) 5 tent ---
**Author:** ![OGIncognito](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/ogincognito/32/475294_2.png) [@OGIncognito](https://ilgmforum.com/u/OGIncognito)\ **Post date:** [May 4, 2023, 4:28pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/2 "2023-05-04T16:28:43Z")
Are you feeding to run off and have run off PH and PPM numbers 🤟 ---
**Author:** ![Lph008](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@Lph008](https://ilgmforum.com/u/Lph008)\ **Post date:** [May 4, 2023, 4:29pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/3 "2023-05-04T16:29:56Z")
I have 2 of these Orange Cream autos. The other one is starting to get yellow tips and edges. Ive been feeding with plain water the past 3 waterings ![20230502_183836](https://global.discourse-cdn.com/growingmarijuana/original/4X/3/a/f/3afcf2c43971178ae1a473afd6dc8d64954e1ed6.jpeg) ![20230502_183833](https://global.discourse-cdn.com/growingmarijuana/original/4X/8/c/d/8cd4a4764c1c8d584439b19d842e3aeb582bae63.jpeg) ---
**Author:** ![OGIncognito](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/ogincognito/32/475294_2.png) [@OGIncognito](https://ilgmforum.com/u/OGIncognito)\ **Post date:** [May 4, 2023, 4:38pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/4 "2023-05-04T16:38:39Z")
Happy Cannaversary Grow Bro… why 3 straight water feedings? Are you feeding to run off and checking the PH and PPMs? 🤟 ---
**Author:** ![Storm](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/storm/32/1066086_2.png) [@Storm](https://ilgmforum.com/u/Storm)\ **Post date:** [May 4, 2023, 4:48pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/5 "2023-05-04T16:48:51Z")
Have to feed her especially in flower. looks a bit nutrient burnt. She will eat those leaves if seeking p/k. ---
**Author:** ![Lph008](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@Lph008](https://ilgmforum.com/u/Lph008)\ **Post date:** [May 4, 2023, 4:51pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/6 "2023-05-04T16:51:31Z")
I was flushing them, thats why plain water. I originally thought nute burn. Then the leaves started dying and the second plant started with the yellowing ---
**Author:** ![OGIncognito](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/ogincognito/32/475294_2.png) [@OGIncognito](https://ilgmforum.com/u/OGIncognito)\ **Post date:** [May 4, 2023, 4:55pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/7 "2023-05-04T16:55:25Z")
That’s usually done at one time, just trying to help Growmie but without run off PH and PPMs what lead you to flushing. Do you have a PH and TDS pen 🤟 ---
**Author:** ![Lph008](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@Lph008](https://ilgmforum.com/u/Lph008)\ **Post date:** [May 4, 2023, 5:09pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/8 "2023-05-04T17:09:56Z")
Honestly i dont have one. Ive been lucky so far i guess. Ive harvested about a dozen autos and 4 or 5 photos so far. Havent checked run off yet. ---
**Author:** ![Storm](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/storm/32/1066086_2.png) [@Storm](https://ilgmforum.com/u/Storm)\ **Post date:** [May 4, 2023, 5:12pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/9 "2023-05-04T17:12:25Z")
Can live without a runoff meter but I learned the hard way cant go without a ph meter with synthetics. I use living soil which self regulates ph in a wide range so never check anymore but have totally destroyed plants with bad ph before. We are very high here…8.8 or so average out of the reservoir. ---
**Author:** ![OGIncognito](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/ogincognito/32/475294_2.png) [@OGIncognito](https://ilgmforum.com/u/OGIncognito)\ **Post date:** [May 4, 2023, 5:33pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/10 "2023-05-04T17:33:19Z")
Continued luck and success Growmie. The TDS pen is needed for mixing nutrients to the correct level of parts per million and would come in handy right now diagnosing your plant through the run off. When you’re using salt based fertilizer, feeding to run off is critical! This helps rinse the salts away that have accumulated in the root zone and medium. A build up of this can drive the PPMs up and the PH down preventing nutrient absorption and can resemble a deficiency or toxicity in the plant and without knowing the run off PPMs it’s a guessing game 🤟 ---
**Author:** ![OGIncognito](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/ogincognito/32/475294_2.png) [@OGIncognito](https://ilgmforum.com/u/OGIncognito)\ **Post date:** [May 4, 2023, 5:34pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/11 "2023-05-04T17:34:13Z")
> [@Storm](#): > > Can live without a runoff meter I’ll agree with this if it’s an organic grow but very much needed for synthetic fertilizer 🤟 ---
**Author:** ![Lph008](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@Lph008](https://ilgmforum.com/u/Lph008)\ **Post date:** [May 4, 2023, 5:54pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/12 "2023-05-04T17:54:11Z")
I’ll order one then. I also forgot to mention that i left out the epsom salt on these 2. I noticed salt buid up on the last run so i figured id try without epsom…if that makes any difference ---
**Author:** ![Storm](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/storm/32/1066086_2.png) [@Storm](https://ilgmforum.com/u/Storm)\ **Post date:** [May 4, 2023, 5:55pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/13 "2023-05-04T17:55:37Z")
just meant I have gotten by without doing the runoff before organic. Good to have but I believe ph kills faster than a nute issue. just me. Can always flush but once locked out more difficult to getem back. ---
**Author:** ![Autos-only](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/autos-only/32/846017_2.png) [@Autos-only](https://ilgmforum.com/u/Autos-only)\ **Post date:** [May 4, 2023, 5:56pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/14 "2023-05-04T17:56:36Z")
I don’t think you have a lack of nutrients, I think you’re locked out. Many many reasons that could be. Without ppm testing you will be going at it blind. ---
**Author:** ![Lph008](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@Lph008](https://ilgmforum.com/u/Lph008)\ **Post date:** [May 4, 2023, 6:08pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/15 "2023-05-04T18:08:53Z")
It started out as spots on the leaves. Rust colored spots. That spread. ---
**Author:** ![OGIncognito](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/ogincognito/32/475294_2.png) [@OGIncognito](https://ilgmforum.com/u/OGIncognito)\ **Post date:** [May 4, 2023, 6:44pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/16 "2023-05-04T18:44:42Z")
> [@Autos-only](#): > > I think you’re locked out. My assumption as well 🤟 ---
**Author:** ![OGIncognito](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/ogincognito/32/475294_2.png) [@OGIncognito](https://ilgmforum.com/u/OGIncognito)\ **Post date:** [May 4, 2023, 6:46pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/17 "2023-05-04T18:46:31Z")
> [@Storm](#): > > Good to have but I believe ph kills faster than a nute issue My thinking and experience as well and typically related to excess salts tanking the PH unless you were inputting the nutrients at the wrong PH 🤟 ---
**Author:** ![OGIncognito](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/ogincognito/32/475294_2.png) [@OGIncognito](https://ilgmforum.com/u/OGIncognito)\ **Post date:** [May 4, 2023, 6:50pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/18 "2023-05-04T18:50:08Z")
Epson salt is just one of the elements that could show that. I generally feed epson at 1-1.2 grams per gallon. An excellent source for magnesium and sulfur 🤟 ---
**Author:** ![Autos-only](https://sea2.discourse-cdn.com/growingmarijuana/user_avatar/ilgmforum.com/autos-only/32/846017_2.png) [@Autos-only](https://ilgmforum.com/u/Autos-only)\ **Post date:** [May 4, 2023, 6:58pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/19 "2023-05-04T18:58:15Z")
Both of which are hard to overdo. If you show a toxicity you did something very wrong! ---
**Author:** ![Lph008](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@Lph008](https://ilgmforum.com/u/Lph008)\ **Post date:** [May 4, 2023, 7:05pm UTC](https://ilgmforum.com/t/help-with-identifying-deficiency/100591/20 "2023-05-04T19:05:44Z")
I’ll have to report back after meter is delivered. Anything i can do meanwhile? [Next page](https://ilgmforum.com/t/help-with-identifying-deficiency/100591.md?page=2)