Can someone help me with this please.

[nickdog32]

I have white widow plants in an ebb n grow system. They are currently 45 days into flower.I use Gh nutes Lucas formula.ppm is currently about 1300 using my hanna meter at .7 conversion. ph currently about 5.8. I grow in a 6x10 space with 2 1000 hps. Right now the space is not full, and only one light is on. Room temps about 82 lights on 72 lights off. Plenty of extraction air and a circulation fan. Humidity hangs around in the mid to upper 60's. This is my first try with the ebb n grow setup. I flood 3 times during lights on for 15 minutes each time. My res is a 55 gallon drum. I initially had calibrated my meter using the .5 conversion, and forgot to change back to .7. So for about three weeks the ppm's were closer to 1700. Keep in mind I add magnesium so that bumps it up a bit. I forgot to mention these plants are cuttings. At about day 30 into flower, I noticed a little rusty looking spot on one of the mid upper fan leaves. I went ahead and changed the res out and ran it up to 1200 ppm, and added about 4 or 5 tablespoons of magnesium sulfate. I had also noted slightly taco looking small bud leaves even before the rusty spot. Things have gotten worse, but not to any of my other varities, or some of the same cuttings put in the flower room 3 weeks behind the problem ones.Mostly fan leaves are affected, but it started near the upper middle part of the plant, and some has gotten higher and lower lately. Sorry about my rambling, I just burned one. Boy, I hope I can manage to attach some pictures or I'm pretty screwed.<a href="http://s686.photobucket.com/albums/vv226/nickcass123/?action=view&amp;current=SAM_0450-1.jpg" target="_blank"><img src="http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0450-1.jpg" border="0" alt="Photobucket"></a>

[nickdog32]

I'll try again with the pictures.

[nickdog32]

http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0450-1.jpg

[nickdog32]

http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0444.jpg

[nickdog32]

http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0447-1.jpg

[otto]

Don't know exactly what is causing that, could be pests, could be malnutrition, could be anything, but, don't panic!....that will make it worse, you're not screwed, it's just a little deficiency or something, freaking out and playing doctor with all kinds of ideas and mixtures will make it worse, lower your temps a bit.........ride it out but........they will be fine........

[c-ray]

looks like magnesium toxicity

[spaceman]

your over feeding @ 1700ppm, 3 weeks eh? you may need some calcium with that mag possibly. Have not seen a mag toxic yet{will have a look}...excess potassium will screw with your plants using the mag......
the edges of your leaves look like nitrogen od{ammonia}, as well the leaves are very dark green that sign of nitrogen od if i recall.

[nickdog32]

Thanks, Funny you mention mg toxicity. I feel I probably over did the mg in my first res batch. I did not change it out for the first month, only added back water and nutes as needed. I went much lighter on the mg on this fill. I forgot to mention I am using well water. I only moved here a few months ago, and the ph is at about 7 and the tds about 30. Pretty good I thought. Figured I would wait on the ro unit until I could save some money. Where I used to live, I always needed to add mg. In veg, some of these plants needed it as well. Some of my gh nutes are pretty old. Don't know if that would hurt anything. These plants were a very very dark green during the time I was over nuting them. That's when I recalibrated my meter and realized it was still set on .5 conversion. I have no signs of pests. I have a 20x40 microscope, and I am very vigilant.(been down that road before) Anyhow it's been 2 weeks since I changed out the res, and I was thinking about doing it again.Comments? I appreciate the feedback. I figured I would ride it out, but acting sooner than later has saved me lots of trouble in the past. Thanks

[nickdog32]

Well, three weeks later and luckily harvest time is soon. Things did get worse. I changed out my res a couple of times, and did not add any more mag. Even my younger plants are getting the same problem. I'm getting an RO setup next week. Lately my well water TDS has been around 65. Wonder what's in it. Perhaps this water contains something causing a lockout? While my other strains are not as affected by it, most of them are younger. I wouldn't doubt in a few weeks they also have the problem. I was checking out the hard water micro. I never used it. Could anyone tell me what the difference is? Since my water is not that hard, could I maybe use a blend of the regular micro and the Hard water stuff? Any info or any suggestions would be greatly appreciated.

[spaceman]

what do you feed @ currently....

[nickdog32]

I have been feeding around 1100 ppm. Give or take 100 ppm. 22 plants and 50 gallons in the res.

[Green Supreme]

Do you have hard water? Might need hard water micro. Peace GS

[nickdog32]

I'm not sure if 65ppm could be considered hard water or not. Could 65 ppm of anything like calcium or mg or iron cause a lockout?

[c-ray]

at that level not Ca or Mg, but possibly Fe if it was high enough... does the water stain your sink etc?

[nickdog32]

Yes, the water does cause some stains in the toilet bowls. Fe probably makes sense. The dirt here is red clay.

[c-ray]

iron problems will show more towards the centre of the leaf on new growth, where the blades converge.. would be nice to see pics of the young plants.. strongly recommend you get new nutes and see if that helps, doubtful you need the hard water stuff though, that is more for 200+ppm 7+pH water I think... 60ppm is pretty normal

ps. you willl want to flush those plants well before chopping

[spaceman]

http://www.ag.ndsu.edu/pubs/h2oqual/watsys/ae1030w.htm
here is some good info on the iron and mag in water, oxygenated water has less hard stuff in it as a rule of thumb, so you could try to bubble it before using it...
green sand filter may be an option....

[nickdog32]

Thank you for all the good information. I will post a few pictures tomorrow. Seems the yellowing starts and follows the veins first. Eventually the leaves get crispy and fall apart. It sucks. Some flowers suffered and are noticeably less potent.

[nickdog32]

I'll try to post some pictures and then post a brief explanation for each.http://http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0468.jpg

[nickdog32]

<a href="http://s686.photobucket.com/albums/vv226/nickcass123/?action=view&amp;current=SAM_0468.jpg" target="_blank"><img src="http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0468.jpg" border="0" alt="Photobucket"></a>

[nickdog32]

http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0467.jpg

[nickdog32]

http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0464.jpg

[nickdog32]

http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0468.jpg

[nickdog32]

http://i686.photobucket.com/albums/vv226/nickcass123/SAM_0469.jpg

[nickdog32]

First picture is of a white widow that was ok 3 weeks ago. At the bottom of the picture is a leaf or two of a different strain affected in a slightly different way. Second picture is more white widow same age as the first pic. Third pic is a NL x skunk same age as the first two pics, not nearly as affected. Last picture is more plants of mostly Nl x skunk, 3 weeks younger than all the rest with no problems yet. Seems to start and follow the veins of the leaves.

[assasinator]

are you foilar feeding again looks like leafs are being burned or just some weak geneticas that do not like the grow area may be try some organic see if it does the same thing if you got shiity water fill up a drum let water sit for days all the shit will evaporate

[nickdog32]

No foliar feeding. I also have never seen sweat on these plants. I'm hoping adding oxygen and getting a RO filter will help. Weak genetics is also possible. I got these seeds from Attitude seeds over the net. I can't be certain of the quality. Thanks for the reply.

[nickdog32]

I want to thank everyone who gave me advice. Despite my troubles, the grow was fairly successful. I got about 2 to 2 and one half ounces per plant of decent herb. I wish I would have flushed well like was suggested. Personally, I rarely do flush. The stuff has a not so nice taste. Also it does not burn as good as it should. Ash is black. The plants behind these are better. I never did get the RO filter, but I added a couple of airstones and a pump to the res and it is helping. This next run I am going to flush for a week and try following some of the drying and curing techniques that I read about on this site. Thanks again.
Nick