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[APD] RE: K+/Ca

> Subject: [APD] RE: K+/Ca
> To: aquatic-plants at actwin_com
> >I know there are to many variables, but I think is quite easy, at least
> >my case. My water is hard about 15 Gh, sure is not a measure of Ca, but
> >will have so bad  luck all these hardness is produced by Mg?. Why These
> >retorted grows remits only stopping K dossing?.
> Well I do NOT see this, the research also supports my assertion that it is
> not the case when the Ca levels are high.
> I kept some 200plus species of plants at a GH of 9. 40+ppm of K+.
> Mostly I stick with 20-30ppm K. I guess it's more in the 10-20ppm range
> these days based off of my advice to folks here and elsewhere. My advice
> based off of enough to make sure you have enough and don't run out
> but.........not waste all your fert's just for fun either.
> But even then, I did not see it. So if it's true, and I know for my case
> certainly was, why don't my plants exhibit this?
> Let me tell everyone, if I did have this type of problem with distortion,
> I'd be worried and try to figure out what was causing it. But I simply
> never had this occur.
> I know what I am adding to the tank, Ca and K+ are both there in the
> folks are claiming they have distorted growth then claiming high K+ is the
> issue.
> My present tap water is soft but so where many of the client's tanks I
> worked on. We never noticed much there.
> Folks with the SFbaaps group often used K+ liberally, and SeaChem's
> Equilibrium which is also loaded with K+ for their GH so the Ca were
> low_ and the K+ pretty high.
> >I dont want to polemize, Tom, but my only variable where always K. I,m
> >telling thes effects are "because" K block Ca uptake.
> Well, something else is going on I think.
> I do not see it. Never have and if it existed, by golly I would have seen
> it a long time ago.
> I am asking myself why have I not see it?
> I just don't buy the magic hobgoblin theory,
> There's a reason for it.
> I went wild with K+, any problem in the past, I saw I added more K+.
> It never hurt any plants I raised including Ammania and Nesaea with fast
> healthy growth, great coloration etc.
> Certainly none of the common vals/swords had issues.
> >Other parameters? OK lets go to make one Hypothesis but ¿Which
> >do you thing will be the explanation?
> >I want to say I have no problems, when "I" have distorted growings, I
> reduce
> >my K dose and thats all, everythink goes fine but I would like to know
> Well sometimes figuring out everything you actually __can test for__ is a
> better/only method you have.
> Too many folks assume that they are infallable, their nutrients/CO2 are
> perfect.
> I know better, with myself included.
> It never hurts to do a large 50% or larger water change, dose the
> back afterwards, check the CO2 flow rate, pH/KH, am/pm levels of CO2, the
> CO2 line for leaks, holes, good mixing in the tank, filter cleaning, Ca/Mg
> GH levels etc.
> Add enough of everything to make sure nothing is going to run out for a
> days.
> I go through all that and somehow my plants do not have any distorted
> growth.
> But you can account for K+, NO3, PO4, Ca/Mg, CO2, DOC levels, traces,
> If something is pretty significant such as the distortion, often you will
> see a dramatic response.
> So where is mine?
> I haver these same plants, I have higher K+, yet I'm missing the distorted
> growth.
> I do KNOW this high K+ is not the reason for these plants even with the
> salinity issues since I've had the same plants at higher and lower levels
> of Ca and high levels of K+. I would not miss the distorted growth and
> would extremely unacceptable with me.
> But I'm still looking into it with the research. Not much to say at the
> moment. But a few of my friends deal with salinity issues and other
> researchers doing work on agriculture crops but I do not know of anyone
> working on high K+/Ca issues with aquatic submersed plants.
> I'm afraid we might need such a specific study to get to the bottom of it.
> But most folks are saying things cleared up when they reduced the K+, so
> should go with that for now since it's an issue of better growth for
> MOST folks are unwilling to stunt their plants or screw with things like
> adding NH4, PO4 at high levels etc, add algae species to their tanks to
> how things progress. They want to solve the problem but if we don't know
> what the problem is and try to go about it without worry about the look of
> the tank, we really have trouble learning much.
> It's that type of experiementing that got the CO2 up, the K+ being added,
> the PO4 being added, KNO3, No RO water etc.
> I have pretty soft water now, Ca++ is about 30ppm, Mg++ about 10ppm. GH is
> about 105ppm and the KH is about 50ppm. So this is pretty soft, GH about 5
> and the KH about 3.
> Now adding K2SO4 should cause the stunting according to many folks.
> We shall see. Ammannia is a fast growing plant that is sensitive to to
> curling. So I have some of this right now and will give it a critical try
> to see if this low Ca/High K+ is true. I do not have a problem with it
> So if it's true, adding more K+ should show this stunting to occur.
> Regards,
> Tom Barr

 I really  believe your method is the simpliest way to avoid problems, but
that not explain why when K is high, in  a lot of tanks  have more or les
the same simptoms. Next time when I will have distorted grow, I will try to
cure it not reducing my K dose as I normally do. Next I will ad more Ca. If
is a solution ¿What will be a explanation if K doesnt interfere Ca uptake?
Sorry but my English is not good enogh to explain my thoughts :(
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