OrlandoSmooth
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just to expand: i run dwc with general hydroponics 3 part series. Nothing extra. i run it with hard tap water. right now i follow the schedule for aggressive veg growth but mix it at 3/5 (without calmag). anything more in the past has given me fast downward pH swings (6.0/6.2 to 5.0- in 48hrs).Hello Everyone,
I’ve been having major pH down swings recently. I run a DWC with tap water and the GH 3 part series. My plants are currently in late veg but for the past month have been having major problems with my pH dropping quickly. I haven’t really had this problem before and have about 4 grows under my belt. At first, I assumed I was overfeeding so I cut my nutes from 3/5 to 2/5 and still have been seeing problems with pH drop (as well as other deficiencies now). After doing some minor research and remembering my days using RO water, I added some CalMag to a new solution at 3/5 and haven’t seen any downward pH swings yet. Does CalMag act as some sort of buffer? Can anyone please explain this to me or educate me on why i’m experiencing this problem? Thank you!!
I used Botanicare CalMag. Im almost positive it’s calcium nitrate.It'd depend on source of calcium in your CalMag supplement. If it's calcium carbonate yes, if nitrate no.. That said, I use my tap water (calcium carbonate) to buffer my feed.
Do you have a report on your tap water? It might not have enough alkalinity to keep your pH stable.I used Botanicare CalMag. Im almost positive it’s calcium nitrate.
I can’t think of any reasons why i’m having these swings. I run extremely clean systems and moved to tap water for the reasons you stated about buffering… Do you have any more guesses?
Yes. I just pulled it. It says the alkalinity is 74-205ppm. That’s a big difference. Do you think it’s possible that I used water out of my tap that had a higher alkalinity during my previous grows and maybe i’m getting water with lower alkalinity now? If it does have low alkalinity, what could I add to help?Do you have a report on your tap water? It might not have enough alkalinity to keep your pH stable.
I have not seen many municipals water quality reports. But rather than alkalinity. Does your report have PPMs of say magnesium and Calcium. I have those numbers in my water quality report. PH going down is typically plants being underfeed in hydro but those bucket deals are not like a regular DWC or Hydro Set upYes. I just pulled it. It says the alkalinity is 74-205ppm. That’s a big difference. Do you think it’s possible that I used water out of my tap that had a higher alkalinity during my previous grows and maybe i’m getting water with lower alkalinity now? If it does have low alkalinity, what could I add to help?
Pictures of the whole plant and roots?Hello Everyone,
I’ve been having major pH down swings recently. I run a DWC with tap water and the GH 3 part series. My plants are currently in late veg but for the past month have been having major problems with my pH dropping quickly. I haven’t really had this problem before and have about 4 grows under my belt. At first, I assumed I was overfeeding so I cut my nutes from 3/5 to 2/5 and still have been seeing problems with pH drop (as well as other deficiencies now). After doing some minor research and remembering my days using RO water, I added some CalMag to a new solution at 3/5 and haven’t seen any downward pH swings yet. Does CalMag act as some sort of buffer? Can anyone please explain this to me or educate me on why i’m experiencing this problem? Thank you!!
And since the topic is calmag I should mention if you need caLMag and use the calsulfate in the above get a bag of Epsom salt at dg and get the plan Jane none fragrant peppermint what ever they got added to the magnesium sulfate.. PH ballancing. P and K use nitrates usually so that gives you some of your N use your sulfates which should be a neutral or Close to remaining N would be your ammonium and and if u need a ph up baking soda a sodium bicarbonate of you got oh problems it's cause of nutrient types nitrate down sulfate neutral usually carbonate 8.5ph and acetate close to 10ph up hydroxide chloride I think are your chlorine stability effects and citrate acid is buffer which is how long u get PH stability most effective with chloride nutrient or tap water chlorine think I got all that correct it's close thinking its potassium sulfate that's the none neutral PH sulfate or potash sulfate not sure on witch one it is cause potash has potassium and they can be sulfate and chloride depending on what's being used is what u get there on the premix stuffIf your looking for a source of calcium to act as a buffer try the neutral formula get food grade calcium sulfate its low water soluble and neutral PH value it slowly releases the cal and sulfate causing it to act as a none chlorine buffer or acts like citrate acid aka buffer Calnitrate is ph down calcarbonater or bicarb 8.5ph CALACETATE 10ph up and calchloride calhydroxide has chlorine in it for the ph WARNING when using calsulfate aDD after all other nutrients and when doing an ec test on your pPM 10 ppM will be enough calcium and sulfate for most of your plants complete grow so suggest you do your weekly or biweekly nutrient change and not meant to be used in a drip or spray hydro system ull get clogs and one last thing do not use dry wall mix for your calsulfate... U can get calcium in all PH balance adjustment needs
I'm sure this is technically correct, but please learn to use sentences with periods. The above is a single sentence. Try reading it out loud. You might see why some of us find it hard to follow.If your looking for a source of calcium to act as a buffer try the neutral formula get food grade calcium sulfate its low water soluble and neutral oh value it slowly releases the cal and sulfate causing it to act as a none chlorine buffer or acts like citrate acid aka buffer Calnitrate is ph down calcarbonater or bicarb is a ph up and calcloride has chlorine in it for the ph WARNING when using calsulfate as after all other nutrients and when doing an ec test on your pin 10 ppr will be enough calcium and sulfate for most of your plants complete grow so suggest you do your weekly or biweekly nutrient change and not meant to be used in a drip or spray hydro system ull get clogs and one last thing do not use dry wall mix for your calsulfate
I use a Botanicare product called Silica Blast. Its label says it is Potassium Silicate.I used Botanicare CalMag. Im almost positive it’s calcium nitrate.
I can’t think of any reasons why i’m having these swings. I run extremely clean systems and moved to tap water for the reasons you stated about buffering… Do you have any more guesses?
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