deficiency issues

[cryogenicman]

Hi
I am growing in happy frog with natures living soil mixed in. I water with spring water at a 6.5 to 6.6 ph. Use recharge now and then.
Led lights using Samsung LM301b in 3000k. 5gallon rain science grow bags. My older leaves are getting this deficiency when they are in flower mode. Is this calcium deficiency or phosperous or something else?
Thanks

 

[namvet25]

Are they flowering yet?

 

[Waira]

This is a "water only" deal? Weird to see a defc. like this in such a soil mix,especially with Ca... it looks more Ca defc. than P, the vein hugging spots are tell-tale, but could be some of both...
It's also necessary to monitor in-pot pH no matter what...
What's you water source, it's pH and EC/TDS? ..wondering if this is a really hard water issue,...

 

[cryogenicman]

They are in flowering, I use natural spring water, (Poland springs) PH my water 6.5-6.6 . Run off water came in at 6.3. Have added roots elements calmat for top dressing and seems to have gotten worse.

 

[Waira]

They are in flowering, I use natural spring water, (Poland springs) PH my water 6.5-6.6 . Run off water came in at 6.3. Have added roots elements calmat for top dressing and seems to have gotten worse.

It's going to take some time to get in there and progression to halt... Did you feed any bloom nutes yet? As mentioned, this could pass for both Ca and P defc,... With that very nice water, it sure isn't a build-up issue from hard water!