Please explain! I'm so confused!

In the last two-three weeks of flower (depends on when I run out lol). On friday I refilled the res and decided to lower the ppm's so I went from 650ish to 450ish. PH'd to 6.3 added some enzyme (100ml per 100liter) and waited! The next two days the nutes fell slowly and PH plummeted, it was at 5.5 by saturday and 5.3 last night. I added 10ml of up which is the most I've ever used, by this morning it hadnt budged. Changing res as wespeak but WTF is going on lol. Root Rot??? Never had it..... . First time using the enzyme product and will post name later but i added only half recommended amount, thanks for any help. Also late for work!!! More info later if needed.

waterdawg said:

In the last two-three weeks of flower (depends on when I run out lol). On friday I refilled the res and decided to lower the ppm's so I went from 650ish to 450ish.

What size rez? Nute temp? What kind of enzyme? how do u add o2? 650 ppm should be fine at that stage-------show pics.

PH'd to 6.3 added some enzyme (100ml per 100liter) and waited! The next two days the nutes fell slowly and PH plummeted, it was at 5.5 by saturday and 5.3 last night. I added 10ml of up which is the most I've ever used, by this morning it hadnt budged. Changing res as wespeak but WTF is going on lol. Root Rot??? Never had it..... . First time using the enzyme product and will post name later but i added only half recommended amount, thanks for any help. Also late for work!!! More info later if needed.

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May the weed gods be kind,

A~~~

Do you see precipitants? Is the water still clear? (hard to imagine you'd get precipitants if all you did was lower the ppm, as precipitants are more likely at a high ppm)

Another possibility is that your plant is taking up K+ , Ca++ faster than it's pulling up NO3- and H2PO4-.

In order to pull up K+ or Ca++, it needs to replace those ions with H+ ions to keep the charge neutral. Replacing K+ or Ca++ with H+ causes the solution to become acidic.

Similarly, in order to pull up NO3- or H2PO4-, it must replace it with OH-, making the solution more basic.

And as you know, a lower ppm generally means a lower pH buffering capacity.

Could it be your nutrient mix has too much NO3- and/or H2PO4- relative to K+ and Ca++?

waterdawg said:

In the last two-three weeks of flower (depends on when I run out lol). On friday I refilled the res and decided to lower the ppm's so I went from 650ish to 450ish. PH'd to 6.3 added some enzyme (100ml per 100liter) and waited! The next two days the nutes fell slowly and PH plummeted, it was at 5.5 by saturday and 5.3 last night. I added 10ml of up which is the most I've ever used, by this morning it hadnt budged. Changing res as wespeak but WTF is going on lol. Root Rot??? Never had it..... . First time using the enzyme product and will post name later but i added only half recommended amount, thanks for any help. Also late for work!!! More info later if needed.

Click to expand...

churchhaze said:

Do you see precipitants? Is the water still clear? (hard to imagine you'd get precipitants if all you did was lower the ppm, as precipitants are more likely at a high ppm)

Another possibility is that your plant is taking up K+ , Ca++ faster than it's pulling up NO3- and H2PO4-.

In order to pull up K+ or Ca++, it needs to replace those ions with H+ ions to keep the charge neutral. Replacing K+ or Ca++ with H+ causes the solution to become acidic.

Similarly, in order to pull up NO3- or H2PO4-, it must replace it with OH-, making the solution more basic.

And as you know, a lower ppm generally means a lower pH buffering capacity.

Could it be your nutrient mix has too much NO3- and/or H2PO4- relative to K+ and Ca++?

Click to expand...

WOW!

Just curious-----where did u learn that info?-------and please say that in english.

sorry stoned,

A~~~

"Could it be your nutrient mix has too much NO3- and/or H2PO4- relative to K+ and Ca++?"

Could be, I'll have to ask the chemist at the plant were its made (its mixed locally). Water looks fine but I do fear there is a bit of root rot! The roots seem to be very weak and break apart easily, also there is a slight granular feel to them. I do have a product called pure flower that is a "concentrated k product 0.30.0 but haven't used it in two weeks. I'm going to have to take a chemistry course to understand all this. Although I did refill this morning and again added the enzyme at half strength and nutes at full strength. Typically after adding nutes my water is 6.8 and I add 30ml of down per 100 litres to lower it to 6.1, today before adding down water was at 6.1 so the enzyme is very acidic it would seem. The enzyme product is power clean by Hesi I believe. Seems like every time I add additives things go off the chart. Not real concerned as I'm in the flushing process for most of the plants although there's two plants of dubious origins that are quite lagging, this will be interesting with a bunch of dead harvested plant roots in the upper tray lol.

I have found aquashield to work best if you can get it.

Do all enzyme additives lower PH as a rule?

No, your bennies should not fuck with the ph.