PH rises and falls

YellowBelly said:
@West Hippie . The idea is, because the effect of the acid/alkali ion is so large, you need to create your pH baseline, which becomes your new zero point for measuring the conductance of the nutrients. This is why it's important to do it in the right order.
Click to expand...
I like Advanced Nutrients approach for hydro sometimes the ph starts at 5.45 and in a two day period hits 5.55 . Then five days to seven days rise to 5.8-5.9 to let the P and Mg in !
 
I've seen the chart before, there's a few things wrong with it and a couple things missed out. It's almost spot on.
pH should always drop in bloom though. Anyone who says otherwise is 100% wrong.
West Hippie said:
Not according to the chart I use a dropping ph is not allowed! These charts are above in Chris #2 post . Every hydro grower in here that has found it ends up calling it a Bible !
Click to expand...
 
Barney86 said:
I've seen the chart before, there's a few things wrong with it and a couple things missed out. It's almost spot on.
pH should always drop in bloom though. Anyone who says otherwise is 100% wrong.
Click to expand...
Mine rises I watch it everyday it’s happened for over three years now with my Advanced Nutrients ph Perfect!
 
West Hippie said:
I like Advanced Nutrients approach for hydro sometimes the ph starts at 5.45 and in a two day period hits 5.55 . Then five days to seven days rise to 5.8-5.9 to let the P and Mg in !
Click to expand...
Yes, this is an idea I like but it's not consistent with strictly correct reading of ppm. Personally, I intend to let the pH rise to 6.2 before adjusting back down and not be utra fussy about maintaining constant nute levels. From the above author's thoughts elsewhere, I intend to just let the nute levels drop a quarter then change the solution.
 
West Hippie said:
Mine rises I watch it everyday it’s happened for over three years now with my Advanced Nutrients ph Perfect!
Click to expand...
If your pH is rising in bloom then your ppm must also be rising. Which means you're feeding too strong.
Unless an have somehow combatted the natural root secretions of the plant which I doubt very much lol.
 
Barney86 said:
If your pH is rising in bloom then your ppm must also be rising. Which means you're feeding too strong.
Unless an have somehow combatted the natural root secretions of the plant which I doubt very much lol.
Click to expand...
Nope ppm falls ph rises ! My OG grow has this recorded , start at the last page and work your way back and you will see it ! My girls are taking all the nutrients in no problems!
 
Make sure the air pump is putting out enough air. You want lots of little bubbles, not a few big ones. Also he should be checking and adjusting ph daily!! Going a week without is crazy, and the plants will be drinking a lot of water over that time, especially once they are at some solid growth and he needs to be topping the res off every day or two as well.
Lastly, make sure that ph pen is calibrated properly and frequently, especially if it's a cheap one. I have to make minor adjustments every day or two to the ph as they drink and water or nute water is added back in. If he keeps the res full and maintains ph at 5.8 every day, and does a full res change every week the problems will likely go away.
Hydro is a commitment for sure.
 
West Hippie said:
Nope ppm falls ph rises ! My OG grow has this recorded , start at the last page and work your way back and you will see it ! My girls are taking all the nutrients in no problems!
Click to expand...
I can assure you thats an oddity mate. Think about it. If ph isnt meant to drop in bloom then why are many ph ups specifically stated as "for use in bloom" and why do the nutes turn out at a higher ph?
Pk boosters specifically rise the ph to deal with the drop.
Bloom nutes should be commimg out close to 6.5. Why would they be designed to do that if the ph will rise and take you out of range? It just doesnt make any sense at all does it?
 
Thats why sometimes your ph stays static. Pretty sure that wee table that was posted points that out somewhere if i remember correctly. If it stays static as the ppm changes and the water level changes it means the mix is out of balance and the plant isnt feeding properly. Basically your 100ppm drop is unbalancing the ratios which is throwing things off.
 
Sonman said:
My dwc run as well dropped ph irratic, I ended up getting a better air pump and it fixed it all. think that as my root ball got bigger and the 2 air stones was not pushing enough air for the roots to stay healthy . After going 4 stones it never had a issue after. I'm thinking even the stone position In the tank helps as it impacts water flow in the tank.
Click to expand...
Sonman, the plant that is acting up as two air stones, while the other well-behaved plants only have one. Could the one with 2 stones require a higher nute level? Think it might be leeching nutes back into res?
 
Barney86 said:
I can assure you thats an oddity mate. Think about it. If ph isnt meant to drop in bloom then why are many ph ups specifically stated as "for use in bloom" and why do the nutes turn out at a higher ph?
Pk boosters specifically rise the ph to deal with the drop.
Bloom nutes should be commimg out close to 6.5. Why would they be designed to do that if the ph will rise and take you out of range? It just doesnt make any sense at all does it?
Click to expand...
I’ve never seen a PH adjuster labeled for bloom use only. Do you mean a PK booster? Also there’s a lot of factors that make a nutrient solution the ph that it is.
 
bunkbudz said:
I’ve never seen a PH adjuster labeled for bloom use only. Do you mean a PK booster? Also there’s a lot of factors that make a nutrient solution the ph that it is.
Click to expand...
Nah I meant pH adjuster mate. Dutch pro being one of the better known brands that does it. Theres is literally called pH grow and pH bloom. Not down and up.
There are many things that effect it but in a reservoir it's almost entirely down to the nute strength. If it's too strong or too week it won't behave right. The ppm can be influenced by evaporation which in turn can effect the pH but again, one should be compensating for that so it still comes down to nute strength.
Keep the ppm just slightly dropping and it should rise by 0.1 per day or 2 in veg then drop 0.1 per day or 2 in bloom.
That gives you the longest time between having to adjust it and allows the plant a nice transition through the useful pH range in order to absorb everything as best they can.
 
bunkbudz said:
I’ve never seen a PH adjuster labeled for bloom use only. Do you mean a PK booster? Also there’s a lot of factors that make a nutrient solution the ph that it is.
Click to expand...
Dutch Pro pH Down Bloom is phosphoric acid and pH Down Grow is nitric acid. They respectively add the most wanted macronutrient by the plant at either life stage. It just gives the option of fine tuning.
 
Grand Daddy Black said:
Sonman, the plant that is acting up as two air stones, while the other well-behaved plants only have one. Could the one with 2 stones require a higher nute level? Think it might be leeching nutes back into res?
Click to expand...
All my plants were in the same tote. Basically think the small pump, not nessarly the stones was not sufficient for the plants oxygen requirements. Adding more stones and a larger pump ensured better water and air flow in the tote.
 
Sonman said:
All my plants were in the same tote. Basically think the small pump, not nessarly the stones was not sufficient for the plants oxygen requirements. Adding more stones just ensured better water flow in the tote.
Click to expand...
Gotta use a fair bit of air mate. Should look like a pot on a heavy boil.
 
YellowBelly said:
Yes, this is an idea I like but it's not consistent with strictly correct reading of ppm. Personally, I intend to let the pH rise to 6.2 before adjusting back down and not be utra fussy about maintaining constant nute levels. From the above author's thoughts elsewhere, I intend to just let the nute levels drop a quarter then change the solution.
Click to expand...
Here’s more to back that from 2009
8CC9890F-1604-4C4E-ABC1-90B83E3A60A1.jpeg
 
Barney86 said:
I can assure you thats an oddity mate. Think about it. If ph isnt meant to drop in bloom then why are many ph ups specifically stated as "for use in bloom" and why do the nutes turn out at a higher ph?
Pk boosters specifically rise the ph to deal with the drop.
Bloom nutes should be commimg out close to 6.5. Why would they be designed to do that if the ph will rise and take you out of range? It just doesnt make any sense at all does it?
Click to expand...
That is bollocks mate. Im going to back West Hippie on this.

1. PH should ALWAYS rise in any medium. If PH falls you have problems.
ppm can fall the two are related but dont react together.

2.PK boosters are to supply plants with more PK...not to correct ph...the best ph for PK uptake just happens to be 6.5.
PK to trigger flowering, then to finish at end, different ratios though.

3.PH wants to be swinging up in flower, from 5.5 to 6.5, feeding a full range... 6 to 6.5 minimum....if not is why you need additives, to compensate in some cases for ranges that are fed more in lower ph.

Just my opinion, based on fact.
 
Lowrider72 said:
That is bollocks mate. Im going to back West Hippie on this.

1. PH should ALWAYS rise in any medium. If PH falls you have problems.
ppm can fall the two are related but dont react together.

2.PK boosters are to supply plants with more PK...not to correct ph...the best ph for PK uptake just happens to be 6.5.
PK to trigger flowering, then to finish at end, different ratios though.

3.PH wants to be swinging up in flower, from 5.5 to 6.5, feeding a full range... 6 to 6.5 minimum....if not is why you need additives, to compensate in some cases for ranges that are fed more in lower ph.

Just my opinion, based on fact.
Click to expand...
Thanks LowRider I was trying to help @Grand Daddy Black in the right direction. Chris already put the chart up showing all the phs Falling is not a good thing .
 
My pleasure mate.
:passitleft:
Crack into some G13 Haze.....
I like that you had a diary, proof, fact from solid info and you know your right based on that.
 
Back
Top Bottom