PH keeps dropping

D

Doodaa

Member
I am using an under current 9 site 8 gall system,co2,water temp 67 running advance nutes ph perfect and into week 3 flower.I had root rot early in veg and used uc roots and ionic nutes but went back to advance for flower.this is my second grow with this setup first one went awesome and this ones been trouble.My PH won't hold a good number like it should they say it will go up and down but mine just goes down.I flushed system out with straight well water twice then used advanced nutes to a 550 ppm and 6.1 ph 15hours later it was 5.5 then 8 hrs after that 4.8. I'm going nuts and broke on nute changes
Thanks in advance for any help
 
tallen

tallen

Well-Known Member
If ppm's are going up then they're taking more water than nutes and your feeding too strong. If ppm's are dropping or holding about steady then it's probably root rot again. Are you using bennies or running a sterile res?
 
hellraizer30

hellraizer30

Rebel From The North
Doodaa said:
I am using an under current 9 site 8 gall system,co2,water temp 67 running advance nutes ph perfect and into week 3 flower.I had root rot early in veg and used uc roots and ionic nutes but went back to advance for flower.this is my second grow with this setup first one went awesome and this ones been trouble.My PH won't hold a good number like it should they say it will go up and down but mine just goes down.I flushed system out with straight well water twice then used advanced nutes to a 550 ppm and 6.1 ph 15hours later it was 5.5 then 8 hrs after that 4.8. I'm going nuts and broke on nute changes
Thanks in advance for any help
Click to expand...
Ph perfect isnt perfect in the sense of holding your ph rock solid! Its still going to move around.
with ph perfect you disregard what the numers are cause the plant is able to feed at any number.

it could be 6.9ph and your plants still think its 5.8 works very well! Just watch out for burning!
And always go 1/2 to 3/4 strength!
 
Krondizzel

Krondizzel

New Member
Doodaa said:
I am using an under current 9 site 8 gall system,co2,water temp 67 running advance nutes ph perfect and into week 3 flower.I had root rot early in veg and used uc roots and ionic nutes but went back to advance for flower.this is my second grow with this setup first one went awesome and this ones been trouble.My PH won't hold a good number like it should they say it will go up and down but mine just goes down.I flushed system out with straight well water twice then used advanced nutes to a 550 ppm and 6.1 ph 15hours later it was 5.5 then 8 hrs after that 4.8. I'm going nuts and broke on nute changes
Thanks in advance for any help
Click to expand...
Your PH will ALWAYS fluctuate. It is your job as a hydroponics specialist to make corrections as needed. There are ways to stabilize it, but I figure I will start out with the basics by telling you that you shouldn't be suprised by PH flux. It happens. Just lets you know your plants are doing their thing.
 
Krondizzel

Krondizzel

New Member
hellraizer30 said:
Ph perfect isnt perfect in the sense of holding your ph rock solid! Its still going to move around.
with ph perfect you disregard what the numers are cause the plant is able to feed at any number.

it could be 6.9ph and your plants still think its 5.8 works very well! Just watch out for burning!
And always go 1/2 to 3/4 strength!
Click to expand...
Also, listen to this guy. Hydromod knows his stuff. I learned a lot from him. I consider myself an expert but I always learn new things from reading his threads and comments.
 
D

Doodaa

Member
Hi thanks.I have drained system down flushed again ran UC roots for 12 hrs at 5mill/gal and then put 1/2 strength AN and ph was 6.1 till 12hrs later it was 5.5 then 4 hrs after it was down to 4.5 then when I went into room a little later it was 4.1,I started using ph up but it doesn't last it starts at 5.9-6. and just drops from there.I have been growing with this water for 3 yrs and this is my second run with the UC and didn't have problems on first...:wall:
 
Krondizzel

Krondizzel

New Member
hellraizer30 said:
Ph perfect isnt perfect in the sense of holding your ph rock solid! Its still going to move around.
with ph perfect you disregard what the numers are cause the plant is able to feed at any number.

it could be 6.9ph and your plants still think its 5.8 works very well! Just watch out for burning!
And always go 1/2 to 3/4 strength!
Click to expand...
Dafaq? That would screw me all up lol
 
F

FThat

Member
Give your plants more nutrients. Raise your EC/ PPM's. Give it a try and see if it works. Maybe go up another 500ppm and focus on Nitrogen.
 
legallyflying

legallyflying

Well-Known Member
I rarely rarely see the PH dropping unless something is seriously wrong. My ph always floats up as nutrients are absorbed.

If I were you, I would highly highly suggest you start brewing EWC tea and skip the sterile Rez routine. You may have Cyanobacteria that is causing the rot. If that is the case, your not going to get rid of it with the standard routines. H2o2, zone, etc.

The tea works Awesome!! It really really does work wonders
 
D

Doodaa

Member
what is EWC tea?will my local grow store have it?I am going nuts keeping PH up,the plants are feeding uing about 2-3 gal a day at 740ppm the roots all look good just a light brown i'm thinking from nutes and the plants aren't burning got some curl going on here and there nothing serious.I am almost ready to change nutes and add overdrive just hoping to get this problem solved
 
legallyflying

legallyflying

Well-Known Member
I'm not going to get into a nutrient debate but many people have had problems with AN in the undercurrent. I would suggest you do some reading over at thcfarmer . Com. They have a VERY informative undercurrent section
 
GreenThumbSucker

GreenThumbSucker

Well-Known Member
PH dropping like that is a sign of bad root rot. You need to look at your roots and cut off any that are slimy. You need to start treating with hydrogen peroxide before you lose your crop.
 
legallyflying

legallyflying

Well-Known Member
You could use hydrogen peroxide but seriously just make 5 gallons of tea and dump it in there.

4 gallons of warm water
About 5 tbs molassis
About 5 handfuls. Good hand fills of ancient Forrest
A tbs of just about any mycorrhizal powder. If you want the best shit out there (and if you buy AN tarantula or whatever the fuck I will beat you down!) then go hear and buy a couple bags of the mycrogrow soluble. http://www.fungi.com/product-detail/product/mycogrow-soluble-1-oz.html

Mix together in a bucket and throw an airstone in the botom. Come back in a day or two, take the stone out and top feed all your plants with it until all of it is used up. I'm telling you man (and at the risk of sounding arrogant, I know what the fuck I'm talking about). EWC tea is awesome. I should really post some pictures.

I got slimed BAD. Like horror show shit. Went back to using the tea, nothing happened at first and then BOOM more root growth than I have EVER seen. We are talking entire bottom of the net pot blasting with roots. An 8"
Net pot mind you.

Don't fuck around, just do it. Ph dropping is a HUGE red flag
 
marc88101

marc88101

Well-Known Member
GreenThumbSucker said:
PH dropping like that is a sign of bad root rot. You need to look at your roots and cut off any that are slimy. You need to start treating with hydrogen peroxide before you lose your crop.
Click to expand...
This is the correct answer! Root rot, or root aphids! Check for both asap! Ph drop is a bad bad sign! Good luck!
 
Krondizzel

Krondizzel

New Member
marc88101 said:
This is the correct answer! Root rot, or root aphids! Check for both asap! Ph drop is a bad bad sign! Good luck!
Click to expand...
Not true. Mine have gone through times where I had plenty of PH drop. What was it from? A lot of water that the plant was drinking. Buffering my PH down.
 
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