a few problems in hydro PLEASE HELP +rep

[spex420]

temp 81
rh 55
res temp 79
ph 5.5-6.9
30 ml aqua shield
5g res dwc
2.ml clorox bleach with fresh res
ppm to 1100
dyna grow


approx 30 days old had severe root rot had to plant in soil just got them back in hydro 3 days ago

ppm was 940 yesterday now its 800 but it seems the def is getting worse looks like n to me my ph was a little high 6.7... but thats still in the range for n uptake am i right?

anyways i adjusted ph to 5.5 added 30 ml aqua guard to get the roots moving res temps around 75 atm


i posted this in newbie yesterday but didnt get the answers i was looking for


my ph keeps rising yesterday it went up to 6.9 i added down to 5.5 now its back up to 6.5 ppm is 960 probably when up when i added the aquashield and ph down

from my understanding(what i read while doing google searches) when ph is rising like that your plants are using up the nutrients but their defs are getting worse please someone tell me what im doing wrong this is my third try at hydro that im failing

im confused if they are deficient in n why is the ppm not going down fuk this is starting to piss me off

+rep to best answer

 

[Kervork]

6.7 seems too high. Churchhaze says anyone with a ph problem is a moron, but I beg do differ.

https://www.rollitup.org/hydroponics-aeroponics/656803-life-without-ph-down.html

 

[spex420]

6.7 seems too high. Churchhaze says anyone with a ph problem is a moron, but I beg do differ.

https://www.rollitup.org/hydroponics-aeroponics/656803-life-without-ph-down.html

that is basicly the same concept as ph down also maybe a ph up in one

 

[spex420]

well i doubled my dose of nutes im not up to 1600ppm i don't know what i'll do if this doesnt work

 

[jrinlv]

Your res temp is pretty high. You will defiantly get root rot again if you do not get that under control. I would try to get your water temp down and I think a lot of things will come into line like your ph. JR

 

[spex420]

Your res temp is pretty high. You will defiantly get root rot again if you do not get that under control. I would try to get your water temp down and I think a lot of things will come into line like your ph. JR

temps are fine

 

[churchhaze]

Keep the pH below 6 in DWC. 5.4-6.0

Slightly over 6.0 is a lot worse than slightly under 5.4.

1600ppm is getting to be too high. If you're having def at 1000ppm with those plants, it's probably pH.

What is the ppm of your tap water? If you have very hard water, it can be tougher to keep your pH in place, but it can still be dealt with.

 

[jrinlv]

temps are fine

Oh sorry I thought you where looking for help, my bad, and no 80 isn't "fine". FYI

 

[spex420]

Keep the pH below 6 in DWC. 5.4-6.0

Slightly over 6.0 is a lot worse than slightly under 5.4.

1600ppm is getting to be too high. If you're having def at 1000ppm with those plants, it's probably pH.

What is the ppm of your tap water? If you have very hard water, it can be tougher to keep your pH in place, but it can still be dealt with.

ppm straight from the tap is 150

 

[spex420]

Oh sorry I thought you where looking for help, my bad, and no 80 isn't "fine". FYI

i didn't mean to seem rude i apologize if i did what i mean is i have a whole 3 coarse system of tea to battle any type of root problems that i run every other week in addition i add a kind amount of bleach to a new res to prevent any organic matter from being a problem.

it was hot yesterday most of the time my res hovers around 75

 

[churchhaze]

150ppm tap water isn't very hard. When you add the pH down, do you wait an hour or so to check the pH or check it immediately? You may not be adding enough pH down if when you come back later and check it comes back up.

Which dyna-grow products are you using?

The pH problems aren't being caused by water temperature.

 

[spex420]

i check it immediately after i put it in the res i stir the res then check

i check every day yesterday the ph was 6.9 i adjusted to 5.5 today was 6.7 i adjusted to 5.5

im using dyna grow- grow i figure its a n problem so i added what has the most n

 

[churchhaze]

I'm looking at the "grow" NPK and it's 7-9-5

The foliage pro is 9-3-6

while all pro is 7-7-7

Grow looks like it has way too much P for veg which seems a bit silly since they call it grow. Any dyna-gro users have insight on this?

Judging by the NPK values of those products, foliage pro looks the best for veg, while all pro looks the best for the stretch and mid flowering.

What's probably happening is that your P is way too high, and the pH down is just phosphoric acid, adding even more P, so it doesn't do much to lower the pH, just falls out of the solution. Do you notice a white powder depositing on the bottom of the tank? If so, that would be calcium phosphate.

 

[spex420]

i also have fox farms grow 6-4-4 but they dont have directions for hydro do you have any experience with ff in hydro?

 

[churchhaze]

I don't have experience with fox farms, but 6-4-4 should work a lot better than 7-9-5 for veg.

i also have fox farms grow 6-4-4 but they dont have directions for hydro do you have any experience with ff in hydro?

 

[spex420]

I don't have experience with fox farms, but 6-4-4 should work a lot better than 7-9-5 for veg.

alright i'll do some research its water soluble so it should work

i really appreciate you taking the time to help me out thanks man

 

[Oo S0uP oO]

A few things...

Foxfarm products are made in two lines, one of them being hydro specific. You need to read the bottle to make sure you are holding on to the right one. I dont use their base nutes so I dont know what specific differences there are between the two.

I use DynaGro products and love them... the grow works well for me consistently despite the high P value. In the future I will be moving to the Foliage pro only from start to finish and be supplementing my PK with the mag pro and protekt, but I have heard of others saying DynaGro products have inconsistent pH readings which in DWC can be frustrating. I would possibly try to shoot homebrewer a PM as he seems to be one of if not the most knowledgeable DynaGro advocate in the forum to substantiate these pH claims. He runs flood tables like me though so his answer might have limited relevancy to you. That being said I do agree with church in the fact that I have always found cannabis to be an especially tolerant plant when it comes to pH swings and really only check mine religiously out of habit as opposed to necessity.

80* for room temp is fine, 75* in your res is not as Im sure you are aware, and home made recirculating options that make it easier to keep the temps down should be explored (even if its just a DIY chiller for a single res). After reviewing your post I think you might be battling your self out of frustration. When adding beneficial microbes and inoculates to battle your root rot you must allow them the opportunity to do their job. By adding bleach and other products such as zone or H2o2 your effectively killing the good guys and accomplishing nothing beneficial for your efforts. You must choose to either run a sterile reservoir, OR fight the good fight not both. With res temps being as high as they are for you I strongly recommend the bennie route and suggest you ditch the bleach completely.

In finality I believe that most of your problems are coming from numbers like 1600ppm being anywhere in your recipe. Try keeping them at 750ppm for a week or two, do what ever you need to keep water temp a bit lower during that time and I believe you will find your pH swings begin to subside. They may not be deficient at all as Im sure moving them from one environment with constantly changing pH to a soil environment that was stable at a much higher level back to an ever changing pH environment has shocked the shit out of them. Goodluck.-S0uP

 

[superstoner1]

You ask for help and then blow it off. Your res temps are wayyyyyyyyyy too high no matter what u have in them, at that temp they barely hold any dissolved oxygen. For your stage of growth ph should never go above 5.9. Period. 1500 ppm is extremely high for dwc, hell 1000 is extremely high in dwc. I never go above 600 in dwc and that is for 12 different strains that easily handle 1000 in aero. Those poor little girls are getting abused.

 

[spex420]

thank you soup you always chime in at the right time i really appreciate that iv recently hit you with rep or else i would do it again

this is my second topic so i might of left a few things out i don't run bleach and bennies simultaneously when i change a fresh res i'll add bleach just as a precautionary measure then about a week later i'll run bennies so every other week off and on by the time i get around to running them the residual chlorine left in the res would have dissipated

 

[spex420]

You ask for help and then blow it off. Your res temps are wayyyyyyyyyy too high no matter what u have in them, at that temp they barely hold any dissolved oxygen. For your stage of growth ph should never go above 5.9. Period. 1500 ppm is extremely high for dwc, hell 1000 is extremely high in dwc. I never go above 600 in dwc and that is for 12 different strains that easily handle 1000 in aero. Those poor little girls are getting abused.

res temps should have nothing to do with ph thats just another can of worms