Need Help!! Thought was Root rot, maybe not...

[AceBoon_40]

Ya that's definitely not helping, hope to my room finished my the weekend..just see how it goes till then. I did look up phosphorus deficiency and looks like might could be that tho it's not common? Leaves look similar and affected area fits

 

[AceBoon_40]

Also my ppm was 670 today down from 685 yesterday

 

[The Gram Reaper]

View attachment 4692036

Do what you can to get the temps stabilized and keep pH balanced. I always suggest taking right bends out of any duct you are running. Strip down anything that slows down airflow unless it as absolutely needed. Ventilation/Temp/humidity is just as important as lighting, nutrients, and genetics in my opinion.

pH fluctuations will cause lock outs because it is out of the zone that plants need it to uptake those things. So even if your nutrients have it, it will not drink them up if its not in the favored pH zone. Its going to take a lot of monitoring the more fluctuating your room does.

 

[The Gram Reaper]

Also my ppm was 670 today down from 685 yesterday

That means they ate some food from it or from settling of the tank. Make sure your reservoir and system has a good flow.

 

[AceBoon_40]

Thank alot for the help! I definitely have to get control of the environment.. I do kinda stir up my res each time I measure because I noticed that makes a difference on my readings. I'm using a 27gal totes with 15 gal in it and believe my pump is 450gph

 

[The Gram Reaper]

Thank alot for the help! I definitely have to get control of the environment.. I do kinda stir up my res each time I measure because I noticed that makes a difference on my readings. I'm using a 27gal totes with 15 gal in it and believe my pump is 450gph

You should have it moving fast enough to notice it stirring. Another pump might help a lot. I have a couple 800s in a 38 gal tote and its a decent stir, could probably use another now that I think about it. Be sure to double or triple stack totes so you don't have them burst. The home depot totes are pretty good but I always triple stack and 38 is the biggest size I feel safe using.

 

[OldMedUser]

That Master blend stuff is all wrong for vegging plants. At 4-18-38 you're starving your plants of N while overdosing badly with the K and the P in relation to the low N value. That's what's causing your issues right there. That is causing lockouts and screwing everything up.

Would be a good booster for the last few weeks of flowering tho.

 

[AceBoon_40]

That Master blend stuff is all wrong for vegging plants. At 4-18-38 you're starving your plants of N while overdosing badly with the K and the P in relation to the low N value. That's what's causing your issues right there. That is causing lockouts and screwing everything up.

Would be a good booster for the last few weeks of flowering tho.

Ya I'm gonna definitely look into other options I guess...live and learn! The masterblend is 1 part of a 3 part solution tho, with Epsom salt and calcium nitrate being the other 2 parts so the total Nitrogen is 19.5, assuming I got the mix right. Gonna do a res change again today and measure how many ppm's of just the calcium nitrate I'm adding for my mix, I've just been adding the 3 parts in recommended ratios individually,mixing well in between, and measuring total ppms afterwards. Thanks for the input!

 

[AceBoon_40]

You should have it moving fast enough to notice it stirring. Another pump might help a lot. I have a couple 800s in a 38 gal tote and its a decent stir, could probably use another now that I think about it. Be sure to double or triple stack totes so you don't have them burst. The home depot totes are pretty good but I always triple stack and 38 is the biggest size I feel safe using.

Ok I'll definitely see if I can get a bigger pump today because that does make sense, I shouldn't have to stir it up!

 

[AceBoon_40]

Ok..since couldn't sleep anyways lol got up early and did a res change. Completed drained and cleaned res. Gonna walk yall thru what I did, but might turn into a book lol

Mixed 3 different 5gal batches each starting with RO water at about 7.6ph and 10 ppm.
Added 2 teaspoons of the 4-18-36 to each bringing them to 355,380,385ppm's

Next added 1 teaspoon Epsom salt each bringing to 460,483,495ppms

Then added 2 teaspoons of Calcium Nitrate(15.5-0-0) to first 2 buckets and after checking seen ppm jump to 848,800ppm. At almost 380ppm nitrogen knew that was way high so didnt add any third bucket. My thinking was that since I had 3 different batches I was making, the first 2 being 380ppm and 320ppm if I left the 3rd batch with 0 it would work out to about 233ppm nitrogen (320+380+0)÷3= 233 ??? No idea if this is correct or not lol

After doing all that check ph on 3 batches and was at 5.45 on first 2 and 5.20 on the one I didn't and the N too.. that's when I realized I forgot to add a little well water to my buckets for some buffering(I have reasonably alkaline well water it usually 110ppm 8+ph)

Went ahead and dump the 3 buckets in my res and mixed it up winding up at 5.40ph and 688ppms for the 14-15gals. I added about 3 gallons of well water to the mix and this brought me to 6.02ph and 620ppm.

About this time realized forgot about the CalMag, not being really sure how much I needed it I only added 20ml(1ml/gal +/-).
Now at 6.05ph and 640ppm.
Adjusted with ph down 15 drops at time bringing down the ph to 5.95, then 5.84, then 5.75 after 45drops and I left it there.

Going to work now with a hope and a prayer

 

[Hollatchaboy]

roots dont look like root rot to me at all.

h2o2 can burn fine root hairs and dont recommend using it unless you really know what ratio to use.

You can add hydroguard to the rez straight away.
Suggest just using at half strength at first then lower it to a quarter strength just for maintenance in keeping the roots buffed up

Water temp I like 72 and that to me works very good....ph is very important and you should check daily ...or have a quality ph meter and visual check that daily

Ph drops are a great back up if you notice a big ph swing on your meter check with the drops before you add any up or down to make sure you meter didnt go whacky on you. or ph drops over strips are better to use imo as your main ph checker, or back up checker.

72 degree res temp will work with hydroguard, but 68 degrees is much better for o2 levels. Mine would get as high as 73 on hot days, but it mostly stayed at 70. Hydroguard works well ime.

 

[Hollatchaboy]

Lucas formula is a good one to start with, through veg and bloom. Jacks 321 is great when you want to start experimenting with ratios!

Do what you can to get the temps stabilized and keep pH balanced. I always suggest taking right bends out of any duct you are running. Strip down anything that slows down airflow unless it as absolutely needed. Ventilation/Temp/humidity is just as important as lighting, nutrients, and genetics in my opinion.

pH fluctuations will cause lock outs because it is out of the zone that plants need it to uptake those things. So even if your nutrients have it, it will not drink them up if its not in the favored pH zone. Its going to take a lot of monitoring the more fluctuating your room does.

 

[AceBoon_40]

72 degree res temp will work with hydroguard, but 68 degrees is much better for o2 levels. Mine would get as high as 73 on hot days, but it mostly stayed at 70. Hydroguard works well ime.

Was just looking thru my pics

72 degree res temp will work with hydroguard, but 68 degrees is much better for o2 levels. Mine would get as high as 73 on hot days, but it mostly stayed at 70. Hydroguard works well ime.

Just looked thru my pics(keep a daily photo log)and realize my rez temp up to 78degrees about 3days..

 

[Bernie420]

Was just looking thru my pics

Just looked thru my pics(keep a daily photo log)and realize my rez temp up to 78degrees about 3days..

You can freeze two liter pop bottles and drop into rez to lower temp, 78 is too hot.

Ph swings from 5.8-6.2 is ok just set at 5.8 and let it drift up. I usually just leave mine at 6.2 as thats were it likes to end up and it works for me there.

 

[Hollatchaboy]

That's really not a good thing. The warmer the water gets, the less it's ability to hold o2. Get a chiller if possible. Frozen water bottles in a control bucket works good too.

 

[AceBoon_40]

Thanks alot guys, gonna do the frozen bottle thing for now till can get a chiller or get the heat under control

 

[AceBoon_40]

My progression so far.. does look like the res change this AM helped cuz I got some new growth(1/2"-ish) and ppm dropped a bit, still not out of the woods but optimistic!! Hydroguard arriving this afternoon

 

[AceBoon_40]

Should I remove all the damaged leaves?
Also if I get these back going right was planning on vegging 2 more weeks , maybe 3 depending how they grow.. should I top these plants(did one already)? They are 12" on center and I have about 2' of height left to work with

 

[Hollatchaboy]

I would leave the damaged leaves. Just in case,If they're still having problems, those are the leaves that'll die of first. you don't want to damage new leaves.

Should I remove all the damaged leaves?View attachment 4692770
Also if I get these back going right was planning on vegging 2 more weeks , maybe 3 depending how they grow.. should I top these plants(did one already)? They are 12" on center and I have about 2' of height left to work with

 

[Hollatchaboy]

Should I remove all the damaged leaves?View attachment 4692770
Also if I get these back going right was planning on vegging 2 more weeks , maybe 3 depending how they grow.. should I top these plants(did one already)? They are 12" on center and I have about 2' of height left to work with

I've never done nft so I can't comment on how much longer to veg, but I believe once you switch to flower, they'll double the size they're at.