Quantumhydro

[Seefrogs]

Found myself using a unit called Quantumhydro it was giving P.h problems

As in P.h kept dropping

From introduction of nutrients and P.h adjusted after a day or so it was running 4.36

Tried alsorts P.h up didn't work it still went down.

 

Anyway it was still giving good looking plants a little leaf fading here and there but no more than that

Good buds was happy enough.

 

But not with the P.h

Had a few brainstorming sessions with mates and we came up with this.

 

If the P.h is dropping

Why is it dropping?

Looking at how the system worked didn't really give a clue as it just circulates the nutes.

 

What could make P.h drop?

After banging heads for a while and a bit more study.

Came up with two ideas.

One was static electricity

Gave that a miss as it could only be positive charge as it's all plastic and  meters to test static would find it difficult to do so.

 

Gaseous exchange.

Was the other idea and much nearer to reality I feel as it's what all living creatures do including us to live.

BREATHE.

OK so if we breath in oxygen breathe out carbon dioxide

Plants do the opposite breath in CO2 breath out oxygen.

Which is the most likely scenario.

 

Mind you none of this theory helped the P.h

 

But this did.

 

Replaced nutrients with soft water nutrients that has no P.h buffer

Added nutes to water gave 7.2 on P.h

As this wasn't too high just left it running.

 

Two days later P.h had dropped too 6.7

Next day 6.35

Well knock me sideways with a dumbbell

WTF

P.h seems to be sorting itself out.

E.C is remaining stable 

 

Top ups just added nutes to water mixed then to mute tank

P.h rose to 6.5/6.7 pending how much was added.

Next day P.h had dropped back to 6.35

It seems it's happy around this figure and returns to it each time.

 

This also has had an effect on the E.C the numbers move with the amount of nutrients drunk by the plants

It is staying remarkably stable.

 

Seems the answers are simple like the system itself.

1/

Don't P.h from the off leave it two/three days and check.

2/

Use soft water nutes in hard water.

Presume it will work the same in a soft water area, 

 

This also leads to more questions

Is Quantumhydro the only system that self P.hs?

Have not heard of another.

 

Does 

Nutrient.Trickling Technique

N.T.T

have an effect on P.h

[Herbal Kint]

That's very low ph,how plants look? You can create album in gallery on site and upload few pics of plant,light off

 

I don't mess with pH so can't help but to say if problem persist and you can't work it out try ph perfect nutes that suit medium your growing in.

[Arthur Mix]

IRC these are  from the early 2000’s ? I also recall someone touting these and flounced off the boards when questioned. PH drops can be caused by running bubblers and sometimes root issues cause it. Seems you in the higher end now.  Most hydro I do I keep at PH6. 

[Seefrogs]

Unfortunately can't grow at the moment so no pics or album for a while

The low P h gave the leaves a lighter green appearance and some strange fading of leaf but only in places

after using soft water formula nutrients P.h wasn't a problem neither was the E.C

 

There are some other differences with some strains the apical meristem was out grown by the first branches and later ones it would be crime nal to chop them off as they give a good 7 grams of cola

[Seefrogs]

14 hours ago, Arthur Mix said:

IRC these are  from the early 2000’s ? I also recall someone touting these and flounced off the boards when questioned. PH drops can be caused by running bubblers and sometimes root issues cause it. Seems you in the higher end now.  Most hydro I do I keep at PH6. 

Maybe when the guy made these he didn't know of it's inner workings, which is a shame he was flounced of the boards and not given a chance but then the hounds have to have there meat.

 

Will say this

Since making the change to soft water nutes there's been no looking back

P.h is solid at 6.35 after initial dropping

Top ups take it to 6.5/6.7 then next day it's back too 6.35 seems it's happy to run at that number

 

E.C is a dream to watch as numbers go down at a comparative level to water being used.

Topping up is easy enough

Have found adding nutes at a bit less than normal say 5.5 MLS a litre instead of 7

Keeps the E.C near as dammit to 2.0 

 

I did change nutrients around ten days in flower to bloom nutes

Coming to the end empty tank and run plain water for a few days 

 

Simplest system have used compared to NFT or ebb and flow

Never got into bubblers or aeroponics 

 

Never have any root issues either there lovely and white when freshly growing turning to a honey blonde as they mature

Edited December 7, 2023 by Seefrogs

[Shumroom]

Can I ask why you’re promoting a system that you’re not even able to show working?

 

It’s pH btw  

 

Atb

 

 

 

[Seefrogs]

If I could load a picture would do

trouble is it seems to not be working 

[Shumroom]

What browser are you using?

 

This site currently prefers Firefox 

Here’s a link that may help 

Atb