Leaf Discoloration - Blue Dream Auto

[TheBug]

Problem: Leaf Discoloration

Medium/grow method: soil

Feed: and supplements used: AN Micro,Grow,Bloom,Voodoo Juice, Bud Candy,Big Bud & Cal-Mag

water source: Tap pH(6.3-6.5)

Strain/age:Fast Buds Blue Dream

light used:600w HPS

Climate:RH 40-45%

Additional info: I have had issues with this plant since I stupidly underwatered her as a small sprout. She's been behind my other 3 plants ever since and seems to grow much bushier than they are. She also has a very low tolerance for nitrogen and really clawed up the last time I gave her 1/4 strength all nutes. The last time I watered her I just used Big Bud and Bud Candy to leave out the nitrogen. She seemed to perk up but some of her leaves starting developing dark spots. I looked up deficiencies but none seemed to match, well to me, but I did some mention of similar spots due to some purpling due to cool temps. My temps will dip down to 59 at times and currently with the HPS bulb in there it only makes it up to about 72. Would those temps do it or is this something else. Thanks in advance for the help.

 

[namvet25]

Your temp is kinda low but I don't no if that caused the leaf problem.1/4 strength should not cause leaf curly and at her size she should at least be getting 1/2 doses or more.How close is your light?

 

[TheBug]

My light is 21 inches away from her. My other plants aren't bushy like her and a bit taller so she's not as close as the others which are about 17-18". FastBuds mentions she doesn't likes nutes to use a quarter dose. But it seems that even that small makes her do weird things. I think or maybe she's just bushy and looks different. Getting some more yellowing on those leaves so maybe it is a deficiency?? I will water her again in a couple days and I'll give her some more nutes and see what the response is. I'll try and get a couple new photos then too.

 

[Waira]

-- I think you may simply have an inferior pheno', which happens more often than people realize,... each seed is a little gamble! The cooler T isn't helping... symptoms look like P defc., which follows with the cooler T's... uptake and transport slow down a lot with P and a few others in particular...
... out of range pH is always a possible factor as well, but you'll need a proper pH soil probe for that; Accurate is a good unit for this, takes direct in-pot measurements
... see if you can get the T up some, especially during lights out; you can try to feed her bloom nutes; I don't know the PK#s on Big Bud, BS doesn't have PK i think, so get on the proper bloom base again,... that said, it's a bit of a risk not knowing the in-pot pH because if it off, acidic side, then feeding more will make matters worse... the "pH perfect" thing doesn't apply to anything once in the pot, too many other influencing factors there,... I think she's more likely just needing more, usually off pH will show other symptoms as well,...