DWC pH swinging like crazy

[grownnotflown420]

Morning all,

Another issue... im having no luck atm, my hydro and soil setups are both fucking with me...

I pH'd my bucket to 5.8 last night about 10pm, by 8am this morning the ppm was approx 7.5 and have no idea whats causing this, I dumped the last res as i thought something nasty could be growing in the water and even swapped the bucket for a brand new, sterile one.

Setup:

chiller set to 18 celsius
25l nutrient solution - ~150-200 ppm
Seedling not yet in due to this issue
pH'd to 5.8
Environment temp - approx 25 celsius, not currently controlling temp as theres no baby in there
Inidica Nutrients - brand new nute company im trialling
RO water used, 22ppm
RH about 60%
Mars Hydro sp150
4l/m air pump with bubbler line (not sure on actual name but not an airstone, more like rubber hose with holes in)
Gold Label Hydroton

could it be that I haven't cleaned the hydroton enough so the dust is affecting pH?

[Rassensi]

Personally I'd be setting the ph around 5.5 at the moment and let it climb up to around ph 6.0 max seedlings always seem to do better in dwc with a lower ph to start out with I found my self in dwc I'd also replace the airline for an air stone they just do a better job

[Trex]

Means the ec silution isnt strong enough as plants are uptaking the nutes and makes the ph rise . Thats the genersl rule .
But there are no plants in ?



make sure when u mix the nutes and ph , that the water is at operating temps my friend . RO water will flucuate big time if it isnt


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[Rassensi]

Ps could you also not remove the hydroton and clean again then sit it in some ph'd water for 24 hours to see if that helps

[grownnotflown420]

Means the ec silution isnt strong enough as plants are uptaking the nutes and makes the ph rise . Thats the genersl rule .
But there are no plants in ?



make sure when u mix the nutes and ph , that the water is at operating temps my friend . RO water will flucuate big time if it isnt


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trex - the temperature thing is a good point, it was a fresh batch of water so probably came through the RO filter at about 10 celsius if that, i re-pH'd this morning so i'll see what it is when i get home

Ps could you also not remove the hydroton and clean again then sit it in some ph'd water for 24 hours to see if that helps

Ras - good point, ill give the hydroton another clean, and the reason I use airlines is to distribute the bubbles more evenly to help with root distribution. But i can always drop 2 air stones in I guess.

Thanks Both

[Trex]

Means the ec silution isnt strong enough as plants are uptaking the nutes and makes the ph rise . Thats the genersl rule .
But there are no plants in ?



make sure when u mix the nutes and ph , that the water is at operating temps my friend . RO water will flucuate big time if it isnt


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trex - the temperature thing is a good point, it was a fresh batch of water so probably came through the RO filter at about 10 celsius if that, i re-pH'd this morning so i'll see what it is when i get home

Ps could you also not remove the hydroton and clean again then sit it in some ph'd water for 24 hours to see if that helps

Ras - good point, ill give the hydroton another clean, and the reason I use airlines is to distribute the bubbles more evenly to help with root distribution. But i can always drop 2 air stones in I guess.

Thanks Both

Yes , when i started coco i would mix and ph it all sometimes at 6-7deg . 5-6 hrs later , everything was out of balance . it made my head spin lol Im a plumber and do a bit of water treatement and should have caught on as i work with e.c and ph all the time duh lol

RO water is even worst as there will be 10x more cation and anion exchanges as the temps change .


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[grownnotflown420]

Yes , when i started coco i would mix and ph it all sometimes at 6-7deg . 5-6 hrs later , everything was out of balance . it made my head spin lol Im a plumber and do a bit of water treatement and should have caught on as i work with e.c and ph all the time duh lol

RO water is even worst as there will be 10x more cation and anion exchanges as the temps change .


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[/quote]

ahaha, i never even gave it a thought!

Is RO water really that beneficial? or could I just dechlorinate my tap water? my tap waters about 120ppm

my first ever hydro run was run solely with tap water, not even dechlorinated and it seemed fine to me...

[Trex]

Yes , when i started coco i would mix and ph it all sometimes at 6-7deg . 5-6 hrs later , everything was out of balance . it made my head spin lol Im a plumber and do a bit of water treatement and should have caught on as i work with e.c and ph all the time duh lol

RO water is even worst as there will be 10x more cation and anion exchanges as the temps change .


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ahaha, i never even gave it a thought!

Is RO water really that beneficial? or could I just dechlorinate my tap water? my tap waters about 120ppm

my first ever hydro run was run solely with tap water, not even dechlorinated and it seemed fine to me...[/quote]
for growing it depends eh , my tap water is .245 ec , and it does well .

above that it may cause probs and then an ro is beneficial .

Tap water if let sit for 12-24hrs , the chlorine dissipates , especially if theres air being put through . and it contains trace minerals all depending on the filtration . Mn,Bo,Mg,Cal,Zn,Fe,Mb etc etc


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[grownnotflown420]

for growing it depends eh , my tap water is .245 ec , and it does well .

above that it may cause probs and then an ro is beneficial .

Tap water if let sit for 12-24hrs , the chlorine dissipates , especially if theres air being put through . and it contains trace minerals all depending on the filtration . Mn,Bo,Mg,Cal,Zn,Fe,Mb etc etc


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hmm, tempted to just say fuck it and use tap water...

my RO filter is trash and takes near enough a full day to filter 50l

[Trex]

for growing it depends eh , my tap water is .245 ec , and it does well .

above that it may cause probs and then an ro is beneficial .

Tap water if let sit for 12-24hrs , the chlorine dissipates , especially if theres air being put through . and it contains trace minerals all depending on the filtration . Mn,Bo,Mg,Cal,Zn,Fe,Mb etc etc


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hmm, tempted to just say fuck it and use tap water...

my RO filter is trash and takes near enough a full day to filter 50l

lol i have a good RO system top of the line , it gives off only 2.2 gallons per hour haha ,
i use 400L per week on average with my 4 rooms . fuck the r.o lol


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