Could this be from low humidity (pics)

[ejl3321]

I struggle with my humidity levels. I can never get it above 40% most of them time its at 35% with the temp around 75 F. I visited my local hydro shop today and the guy said the problems I've been having with my plants could be from low humidity. I was thinking mag deficient but epsom salts didnt help. THen I was thinking nute burn but I only had them at 800ppm and I'm in week 4 so I dont think so...but maybe? The big fully grown leaves turn yellow starting at the tip and margins and then get more yellow till they dry out and turn to a crisp and die. THe margins turn upwards before they die. PH at 5.8. light 20 inches away 600 hps. Could all my probs be cause the humidity is too low?

 

[jay cas]

im not a hydro guy, but 35% humidity isnt all that bad

 

[THChead]

all i can say is http://www.drugs-forum.com/growfaq/951_files/nietz010.jpg

 

[Titania]

all i can say is http://www.drugs-forum.com/growfaq/951_files/nietz010.jpg

Dude I had the same avatar nice 1

 

[ejl3321]

then what is the problem....every time I grow I have this problem with leaves drying out and dying. I didnt even use that much nutes this time. Am I deficient? I really don't get it.

 

[groprofosho]

what kind of nutes are you using? you should try keeping the ferts at about 400ppm for a while. make sure your ph balancing your solution....5.5 I cant imagine what the problem is...do you let your roots dry out sufficiently? I just use a dwc. I let the roots hang in water with bubblers and make sure they get plenty of air and their netpots stay dry.