What deficiency do i

First off this is my first post so thanks for everyone who can help. I’ve read lots of helpful info here over the years and want to say thanks!! This problem is kinda stumping me though.

I have a dance world plant here that flowered outdoors and I managed to re veg it indoors as I didn’t want to lose the pheno.

I used some random soil that from what I could tells was not pre fertilized, it was organic and I amended it with perlite to create more drainage. I couldn’t find any sunshine mix number 4 before I took off on vacation in November. Not peak growing season in BC.

I use botanicare for nuts and use the veg and cal/mag ones for soil and adjust ph to 6 ish. Sometimes 6.2 sometimes 6.4...

it’s in a 2x4 grow tent with a mars hydro led light that has the natural spectrum (not purple).

The leaves seems really light green with dark right down the middle.
I was thinking it might be a sulphur deficiency which I’ve never seen before but maybe it’s from the soil? No bugs or anything. Just weird. I’ve started to add some bath salts which I read can help add magnesium sulphide to the my water. Can’t say it’s cured anything but maybe it’s gotten 15% better but who knows. Could be me just hoping.

Any help would be greatly appreciated! Not stoked on flipping into flower until this is solved.

Thanks guys!

Magnesium shows on older leaves. That my friend is a serious zinc deficiency.

Now it’s either because u don’t have enough zinc (unlikely if using calmag as they tend to have micronutrients) or its pH.

It could also be antagonised by other nutrients.

Thanks. The diagram says too much calcium or phosphorus can cause a decrease in zinc. I think I’m going to do a good solid flush and re asses some of the cal mag thats needed or not needed. I also have other seeds to grow so maybe re start with proper soil and no stress from re vegging which kinda was just an experiment with the bonus of a good pheno.

You don't, you have a pH problem

Nutty sKunK said:

It could also be antagonised by other nutrients.

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K+deficiency looks like that too.

@Di0nysus On the mag sulphate you describe as bath salts...careful because some of those are scented which probably is not good for plants.
JD

JohnDee said:

K+deficiency looks like that too.

@Di0nysus On the mag sulphate you describe as bath salts...careful because some of those are scented which probably is not good for plants.
JD

Click to expand...

Thought lack of K is burnt tips on older leaves?

thanks guys. The bath salts are unscented. Gonna do a good ph balanced flush. So I should be in the 6.2-6.4 range for ph right? Apart from recalibration how can my ph be off if that’s what it’s been?

got to be a lockout???

pH pens break all the time, some last a week, if you’re lucky they last a year.

I had a crappy yellow one that didn’t last long. This bluelab one seems fine. So if I use ph7 solution and it reads 7 or 6.9 I’m guessing it’s still working totally fine right.

I flushed the plant really heavily and gave it half veg nutes and half flower nutes as well as some terpinator after. See what happens I guess.

You’d think that it would be fine but I’ve had pens that read solution right but nothing else. If it takes forever to read then it’s probably done