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"Bible" of Keeping Aquatic Plants

Edvet said:
No but the difference in value is the key. The one point drop ( at 4-6 kH) gives the required CO2 value ( more or less).
Keeping pH at 6.8 ( for instance) will give varying CO2 levels because while it is used or produced there will be more or less CO2 added, and we want the drop max at light on. This can work in low light where the CO2 demand isn't that critical but in high light it will produce to much varying CO2 levels.
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I understand this, that's not the point.. The point is how can not using a controler be more stable.. How is this determined.. Counting bubbes for a minute and assume it is accurately the same for the rest of the 600 minute cycle?

Assume i don't use a controller but just constantly monitor pH, than the pH should constantly fluctuate with a stable CO2..
 
Anyway If bubble counting is it and the little dropchecker color/ph content is the holy grale of CO2 stability than upgrade the darn thing like this, poblem solved and control away even more accurate..

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Edvet said:
Yes and that doesn't matter, pH changes through CO2 are "weak acid"reactions, fish don't mind. Plants reaction to changing CO2 are devastating, it costs them dearly and they get damaged in the proces.
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My point is how can Ph Measuring for stable CO2 content be any good is pH fluctuates with a stable CO2? It can't without darn complex formulas and a pocket calculator and some other measuring devices. One only can be averagely more stable than the other.. Averagely more stable still is unstable..
 
Dropchecker changes are very slow.
But there is no need to rigid control, there is need for stable CO2 levels for the first 4/5 hours of lightperiod, after that the levels can decline, because the plants slow down.If you want to control you need two controlers, one for each period, only the setting of the second period doesn't realy matter.only the first (before and at start lightperiod) does, and using a timer works just as if not more efficient.
 
Yes but adding 10 bpm during the whole day, doesn't change the plant uptake in the light cycle.. Thus starting with 10 bpm and stopping with 10 bpm over this cycle still results in a unstable CO2 content during this process.. Either way aint stable.. Te uptake is dynamic the admistering is rigid..
 
zozo said:
Anyway If bubble counting is it and the little dropchecker color/ph content is the holy grale of CO2 stability than upgrade the darn thing like this, poblem solved and control away even more accurate..

View attachment 112491
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Sorry in the heap of the moment didn't think of the checkers reaction time 😳 this would be crap for controlling. But would give a more accurate reading than only a color.
 
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