Diagnosis required

I attach a couple of pics for a weekly update. I fed them some epsom salts and have just given them some phospurus. It certainly seems to have stopped any rapid degradation so I'm hoping it's working. However, I don't think something's right with one of the plants, and I'd be really grateful for some further advice.
As far as I'm aware, both plants have been given the same amount of nutrients (I can't recall if they're all in multi purpose compost, miracle gro compost or a mix of both - I'll try remembering next time!), but one is seemingly very healthy and the other is definitely showing signs of some 'sickness'. I'm hoping that the leaf discolouration will be an obvious clue for an expert to diagnose exactly what the problem is. I'm not even sure if I'm over or under fertilising! I guess the latter as the more vigorous grower seems to be suffering, but I'd hate to guess wrong!!
Thanks in advance for any help that's offered.

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Originally Posted by mrrichiet

I attach a couple of pics for a weekly update. I fed them some epsom salts and have just given them some phospurus. It certainly seems to have stopped any rapid degradation so I'm hoping it's working. However, I don't think something's right with one of the plants, and I'd be really grateful for some further advice.
As far as I'm aware, both plants have been given the same amount of nutrients (I can't recall if they're all in multi purpose compost, miracle gro compost or a mix of both - I'll try remembering next time!), but one is seemingly very healthy and the other is definitely showing signs of some 'sickness'. I'm hoping that the leaf discolouration will be an obvious clue for an expert to diagnose exactly what the problem is. I'm not even sure if I'm over or under fertilising! I guess the latter as the more vigorous grower seems to be suffering, but I'd hate to guess wrong!!
Thanks in advance for any help that's offered.

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P.S. I certainly could find no evidence of spider mite (I'm also in the UK and I've never heard of the problem over here)

Definatly no signs of infestation. Those are water drops. The plants would have tons of spots on them if they were infested with mites.

Keep us informed on the outcome.

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Originally Posted by Oregon Green Free

Definitely no signs of infestation. Those are water drops.

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I concede my misreading of the photo(clicked on the pic for full size)I was looking at wet reflective material(sure looked like webs at a glance)sorry,....But i still think your problem a nute deficiency(major,macro,secondary ) combined with heat build up,but maybe an expert will contradict that?good luck....bonbon

Thanks once again bonbon. I've bought another fan now so have an intake and exhaust which keeps the temp at about 25oC on a hot day, so that's a good improvement. Humidity is still around 30% though, so I think I'll have to buy a humidifier for the final stages of flowering. So far though, I think you advice has been excellent :)
I don't suppose you're able to post a link to a decent page regarding the major, macro and secondary nute problems, as I haven't read about those classifications before? Thanks in advance if you can.

http://www.onlinepot.org/grow/nutrients2.htm
http://www.onlinepot.org/grow/nutrients.htm
http://greenmanspage.com/guides/nutrientdisorders.html
http://www.cannabase.com/cl/bcga/bcga/nutrients.htm

Thanks dude :cool:

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Originally Posted by bonbon

http://www.onlinepot.org/grow/nutrients2.htm
http://www.onlinepot.org/grow/nutrients.htm
http://greenmanspage.com/guides/nutrientdisorders.html
http://www.cannabase.com/cl/bcga/bcga/nutrients.htm

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thanks man
i was looking for certian info i found,,,,nice one

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Originally Posted by NowhereMan

thanks man
i was looking for certian info i found,,,,nice one

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you're welcome my friends....bonbon

your plants look like they might be suffering from irregular watering or perhaps sudden changes in feeding... air temp and humidity are important, but one of the chief problems indoors is air exchange and ventilation... your plants are nice, and strong,..... give them a couple of long drinks of plain H2O, and then try a mild solution of seaweed extract, and fish emulsion.. this will bring them to a pretty nuetral state and them you can begin to experiment with other things...YOU ARE DOING GOOD! horticulture takes time and patience.. hasta :)