Blue Widow leaf problem, midway through flowering, help needed

[1000Hz]

I'm having a problem with my Blue Widow. She's been perfect all this time and now some of her leaves are looking bad.. It's about half way through flowering and this has just turned up in the last 2 days, here's a couple pics. After you click the link you can then click the pic and your browser will enlarge it to full resolution.. I couldn't get GC to display the pics as thumbnails in this post so I had to post the direct links.. I hope someone knows what this is as it seems to be spreading fairly quickly. I thought it looks like it may be a calcium deficiency, but I'm not sure. It's not pests of any sort, I've thoroughly inspected the leaves in question and also my grow area is very clean and pest free..

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I'm using fox farm ocean forest soil and fox farm big bloom nutes. I use RO water and mix half of what fox farm recommends on their feeding chart per gallon. She's under a 400W HPS in 12/12 and her top is about 12 inches from the reflector glass. Temperature stays 68F - 72F. Hope I didn't leave anything out.. Thanks for reading!

[myles117]

its def a deficiency. ph is probably the culprit causing the deficiency though.... have you been adjusting the waters ph after adding in the fox farm nutrients??? If not, the ph of the water was most likely brought down out of the ideal range by the nutrients. Nutrients are acidic thus why it drops. To fix the problem, you wanna flush the soil with three times the volume in water. So a 1 gallon pot would need at least 3 gallons of ph balanced water run through it. After you do this, take a sample of the water dripping out in a seperate container like a cup and read the ph. You want the ph to be between 6.5 and 6.9

I went through hell with this issue before finding the city and learning how importent ph is even with soil growers. Best of luck!!

[1000Hz]

Wow that is such great information! Thank you myles! You have just saved my plant, she really started to look bad right before she went to sleep for the night.. Tomorrow I flush her! I just gave her a big drink earlier today though, hope I dont end up over watering. Thanks for reminding me of the ph change after mixing nutes, wish I would've realized that when I harvested my easy ryder.. She was all yellow and dry lol, I thought it was just lack on nitrogen. Oh well it was still a nice yield.

[1000Hz]

Well turns out it wasn't a PH problem.. It's a Calcium deficiency as I initially suspected.. I had to feed her some Flora Nova Grow nutes as it is the only thing I have with calcium in it. She's in mid-flower, will the grow nutes cause any problems with the buds? I'll probably have to give her another couple feedings of the grow nutes to pull her out of the deficiency. Seems like I remember reading somewhere that it's a good idea to feed with grow nutes every now and again during flower.. Any truth to that?

[mordenkainen]

Ha sorry I missed this post. Glad you figured it out though. Flora Nova is my favorite stuff.