My leaves are kinda yellow and blotchy. What is it?

PH is between 5.6 and low 6
PPM is about 350

Any ideas?


My grow thread...

https://www.rollitup.org/grow-journals/470302-bc-producer-first-grow.html#post6441864

magnesium deficiency would be my first guess.

More information would really help to get a more informed oppinion on what is wrong. Instead of a shot in the dark. What kind of nutrients are you feeding them? What type of water. Is it tap water, distilled, R/O filtered? Personally I am one to always use regular tap water unless it is unsafe to drink. First off it is a big waste of money and water to use a R/O system. And a R/O system filters out all the minerals that are naturally found in water like Calcium, Magnesium and a few others that a lot of nutrients do not have, because it is supposed to be in the water you feed them. If you are useing Rockwool. Did you pre-soak it for about 18 hours and flush the hell out of it until you got a good solid PH of 5.8?

Lord Dangly,

I started with tap water which, out of my tap, runs at 140PPM. The last batch of water used was actually Arrowhead (40PPM) and I was planning on switching to RO after that. I add calmag, sensi bloom A/B and hygrozyme. Again this week my PPM was fairly low at 350PPM. When I started these plants I had the nutes way to high at 1200PPM. I'm new...

As far as the rockwool, they were flushed before I started them to flower but nothing in the last 16 days.

Again my PH bounces between 5.6 and the low 6's.

How old are they?

Well... I started them as clones that I bought so I don't really know exactly. They've been in my box for 17 days now.

Try to keep your PH below 6.0. And you might bump your PPM up just a bit, to like 550 PPM. And the PPM of your tap water is pretty low. I would just be useing tap water. If you are going to keep useing filtered water, I would add a bit of Cal/Mag to the mix.

I dropped a little more calmag into the res this morning. The lower leaves have gotten more yellow in one day.

You say you have only had these clones for 17 days? But they are already budding. So I take it from the photos you switched them to 12/12 light as soon as you got them home. I would have had at least allowed them to veg for 10 days or so with veg nuts to allow them to set good roots and feel at home. You flipping them to Bloom food so quickly has made them nitrogen deficient. Bllom nutrients are usually lower on the Nitro then veg nuts. As I said, boost the nutrients a little. You might throw in a bit of veg nuts to boost the nitrogen. But either way, they should survive and produce some nice buds.

The guy who sold me the clones told me to throw them right into flower so I did. I actually only had Sensi Grow the first week so they had that for a week. However, I totally over did it and fed them like they were mature at 1200PPM (newbie mistake). I had a little nute burn and twisted leaves but hey survived—somehow.

I'll check the PPM tonight after work and if I have a little room to get to 550PPM I'll drop a little Sensi Grow to try and boost the nitrogen.

I'm about 5 inches from hitting the lights in my grown box so I hope they slow down a little.

Thanks for all the advice.

P.S. The full story is in my sig.

I'm not hydro but could it be that ph is to high and not taking in N. Like I said I'm not hydro but looks like a N def. since yellowing is starting from bottom and you did kick into flower and they like a boost of N before 12/12 from my exp.

TheOrganic said:

I'm not hydro but could it be that ph is to high and not taking in N. Like I said I'm not hydro but looks like a N def. since yellowing is starting from bottom and you did kick into flower and they like a boost of N before 12/12 from my exp.

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Man, the PH never goes above 6.2. Is that still too much? I drop it to 5.6 in the morning but it bumps right back up every day.

These leaves are lovely! </irony> PH at 5.6 and PPM at 590.

What kind of light do you have? They are stretching pretty bad.

Wow, I hope this gets answered. My plants are having the same issue.
I'm in soil though.

The saga continues.

It sucks to just slowly watch your plants get sick. I'm still not sure how to stop this but I see it creeping into other leaves as well.

Again. PH is 5.6 to 6 and PPM is 590. Using calmag and sensi bloom and a little hygrozyme in bottled water.

Lord Dangly Bits said:

What kind of light do you have? They are stretching pretty bad.

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This is the light setup. I always take the photos with the veg light on but that one is actually always off as the two 400 watt HPS lights are on 12/12.