[Slackerbri]

Thanks H3ad, this has been a huge help for the transition to coco.

[Nebulae]

This formula and thread has been full of great information. You are one smart person who has helped a LOT of people, H3ad, (as seen in this forum). If you ever change things up and try a new nutrient line out, I would love to see any of your formulas! You are very smart in an area that I'm trying to improve my knowledge in. I just wanted to say thanks for starting all of this, H3ad, and to everyone who contributed to this thread over time.

[Dr. J]

Hey all! I’m hoping someone can help out with the issue I’m having. My tap water is 280 ppms so I’m adding and in this order 1ml/silica, 1/ml cal mag, 6/micro, 9/bloom and growth is really stunted on some plants. Very red/purple stems, almost looks like nitrogen burn(crispy tips on the fan leaves and the leaves are dark green). I believe it’s probably my tap, I’ve been using it forever and it seems this run everything’s going to shit!

[Miraculous Meds]

Originally Posted by Dr. J

Hey all! I’m hoping someone can help out with the issue I’m having. My tap water is 280 ppms so I’m adding and in this order 1ml/silica, 1/ml cal mag, 6/micro, 9/bloom and growth is really stunted on some plants. Very red/purple stems, almost looks like nitrogen burn(crispy tips on the fan leaves and the leaves are dark green). I believe it’s probably my tap, I’ve been using it forever and it seems this run everything’s going to shit!

Flush thru and check your run off water. Its probably high and you need to flush thru till your coming out almost what your putting in. then you will know for sure that its not salt build up or dry medium causing cec problems. the 6/9 comes out about 1.2ec, with your already .55ec tap water, that will make your starting solution 1.75ec. So your run off water should never reach over 1.8ec, or with your tap, 2.35ec. I consider 280ppm too high, and would use ro water, and 1/2 tap water so your starting solution is down to 140. Also make sure your starting ph going in is between 5.8 and 6.2. the cal mag and silica at that strength probably are ok, but I would drop them as you don't need them, and the silica could be bringing your ph up a tiny bit. Not a problem unless your starting tap water is high bicarbonate, keeping your ph too high possibly.


Likey the case here is the medium started out too high salt content, or was too dry, and the cec was not buffered properly to start. It takes quite a while for recovery, but if this is the case, make sure you get good run off and don't let the plants dry between waterings, unless your in the transplanting stage.


By the way dark green leaves, and crispy tips is an indication of too much N and or salt build up.

[Dr. J]

Originally Posted by Miraculous Meds

Flush thru and check your run off water. Its probably high and you need to flush thru till your coming out almost what your putting in. then you will know for sure that its not salt build up or dry medium causing cec problems. the 6/9 comes out about 1.2ec, with your already .55ec tap water, that will make your starting solution 1.75ec. So your run off water should never reach over 1.8ec, or with your tap, 2.35ec. I consider 280ppm too high, and would use ro water, and 1/2 tap water so your starting solution is down to 140. Also make sure your starting ph going in is between 5.8 and 6.2. the cal mag and silica at that strength probably are ok, but I would drop them as you don't need them, and the silica could be bringing your ph up a tiny bit. Not a problem unless your starting tap water is high bicarbonate, keeping your ph too high possibly.


Likey the case here is the medium started out too high salt content, or was too dry, and the cec was not buffered properly to start. It takes quite a while for recovery, but if this is the case, make sure you get good run off and don't let the plants dry between waterings, unless your in the transplanting stage.


By the way dark green leaves, and crispy tips is an indication of too much N and or salt build up.

Thanks for the response amigo! Just a little confused, so are you saying the 1.2ec is with the 6/9 with RO, and if I add my tap it shouldn’t exceed 1.8, but what’s the 2.35 ec? It’s sounding like maybe both to much nitrogen and salt build up! Ill keep flushing till the run offs looking good! Thanks for the help bud always appreciated!

[Miraculous Meds]

Originally Posted by Dr. J

Thanks for the response amigo! Just a little confused, so are you saying the 1.2ec is with the 6/9 with RO, and if I add my tap it shouldn’t exceed 1.8, but what’s the 2.35 ec? It’s sounding like maybe both to much nitrogen and salt build up! Ill keep flushing till the run offs looking good! Thanks for the help bud always appreciated!

1.2ec is what this 6/9 comes out to in ro water at 5.9ph, for me at least. 600ppm on a 500 scale, or 840 ppm on a 700 scale. Its all the same, 1.2ec.


Your water is 280ppm, say its on a 500 scale, then its .55ec roughly. For this purpose, I guess it doesn't matter too much if its on a 500 or 700 scale. that's just the conversion from ec to whatever meter you have x whatever scale. they are usually x 500 or 700.


For this purpose im trying to explain that your base nutrient on a 500 scale would be 600ppm (1.2ec). So if you add your water ppm of 280, the total should be 880ppm. In this scenario im suggesting to not go over 300ppm more salt content, so not more than 1180, before flushing, or watering more often so not to build up to this level.


If you used 1/2 tap 1/2 ro, your water would be 140ppm starting, then add your base nutes at 600ppm, so the total now will be 740ppm. In this scenario, not going over 300 extra ppm of salt build up would be not going over 1040ppm.


Or in ro water and 6/9, you will be at 600ppm starting, so don't go over 900 ppm on your run off.


Im basing the run off limit on suggestions by djm, who was watering little, to no run off, but checking every few weeks. In my system, I have too much air flow, so I have to water more or my medium dries out and I get salt build up.

[Dr. J]

Originally Posted by Miraculous Meds

1.2ec is what this 6/9 comes out to in ro water at 5.9ph, for me at least. 600ppm on a 500 scale, or 840 ppm on a 700 scale. Its all the same, 1.2ec.


Your water is 280ppm, say its on a 500 scale, then its .55ec roughly. For this purpose, I guess it doesn't matter too much if its on a 500 or 700 scale. that's just the conversion from ec to whatever meter you have x whatever scale. they are usually x 500 or 700.


For this purpose im trying to explain that your base nutrient on a 500 scale would be 600ppm (1.2ec). So if you add your water ppm of 280, the total should be 880ppm. In this scenario im suggesting to not go over 300ppm more salt content, so not more than 1180, before flushing, or watering more often so not to build up to this level.


If you used 1/2 tap 1/2 ro, your water would be 140ppm starting, then add your base nutes at 600ppm, so the total now will be 740ppm. In this scenario, not going over 300 extra ppm of salt build up would be not going over 1040ppm.


Or in ro water and 6/9, you will be at 600ppm starting, so don't go over 900 ppm on your run off.


Im basing the run off limit on suggestions by djm, who was watering little, to no run off, but checking every few weeks. In my system, I have too much air flow, so I have to water more or my medium dries out and I get salt build up.

Ahhhh I see! Cool my brotha thanks for clearing that up much appreciated! Geez I checked the run off and it’s ranges a little from tray to tray, but holy smokes it’s about 1400-1500 coming out! Going to flush, flush, and flush some more and ordered an ro unit! Thanks again!

[Dr. J]

Originally Posted by Miraculous Meds

Flush thru and check your run off water. Its probably high and you need to flush thru till your coming out almost what your putting in. then you will know for sure that its not salt build up or dry medium causing cec problems. the 6/9 comes out about 1.2ec, with your already .55ec tap water, that will make your starting solution 1.75ec. So your run off water should never reach over 1.8ec, or with your tap, 2.35ec. I consider 280ppm too high, and would use ro water, and 1/2 tap water so your starting solution is down to 140. Also make sure your starting ph going in is between 5.8 and 6.2. the cal mag and silica at that strength probably are ok, but I would drop them as you don't need them, and the silica could be bringing your ph up a tiny bit. Not a problem unless your starting tap water is high bicarbonate, keeping your ph too high possibly.


Likey the case here is the medium started out too high salt content, or was too dry, and the cec was not buffered properly to start. It takes quite a while for recovery, but if this is the case, make sure you get good run off and don't let the plants dry between waterings, unless your in the transplanting stage.


By the way dark green leaves, and crispy tips is an indication of too much N and or salt build up.

When run off is this high could you flush with phd to water? I’ve heard before it’s not good to flush with straight ro in coco? Just wondering since the run offs so high? Thanks again!

[Miraculous Meds]

Stick with at least .6 ec, or 300ppm base nutes. That way you dont break the cec bond when done flushing. Also some ppm in water effectively pulls more salt out of the medium than plain water.