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  #1  
Old 02-09-2020, 11:38 AM
TravelingPotato TravelingPotato 目前離線
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Default Alkalinity question

Hi all, I am sure this has been discussed before but I can't find a thread on it so please point me in the right direction if you know of one. Can someone explain to me why the zeovit method guide and many people on this forum say alkalinity should be 7-7.5dKH or so? I know that there is some evidence that higher dKH leads to faster coral growth and it is common for people to be at 9 to 11 for sps growth. Is there something about zeovit that makes it more effective at 7.5? What are the risks of running alkalinity at 9 or 10dKH with zeovit?
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  #2  
Old 02-09-2020, 01:05 PM
jacky jacky 目前離線
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I am not a chemist and I cannot give you a positive answer, this is my idea

NSW parameters are critical when running a low-nutrition system like ZeoVit. Anything else can be considered stressful to corals

Higher nutrients make up for some of the stress caused by higher dKH

In other words, in ZeoVit and even in the ULNS environment, corals do not have a coat of zooxanthellae to provide protection. Corals are like "naked". At this time, any parameter that is too high is a source of stress for the coral. Provides nutrients / colorants at all times to provide a beautiful coral look.
We try to keep the natural environment water quality as much as possible (NSW)

When the alkalinity is high, corals may indeed grow more, but when the PO4 content is low and the zooxanthellae density is low, the incidence of calcification may be high. If the alkalinity value is too high, calcification may occur too quickly and damage the coral

We can think about it from another angle. Then, considering the above conditions (low nutrition), maybe the coral growth at dkh6.5 ~ 7.5 level, even when dkh is 6, it will not be slower than dkh 9 or 10, and even the coral is faster. growing up. Because of the effects of "coral calcification"

Also, I think it's not just KH. As mentioned above, anything too high is an extra strain on the corals.

However, there seems to be some inline relationship between Kh Ca Mg

Another additional idea is that the higher dkh, I don’t know if it has another effect with the ZeoVit material, I really don’t know, it ’s just an idea

PS: supplement, what are the risks, answer (coral tip burn)

Last edited by jacky; 02-09-2020 at 01:33 PM.
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  #3  
Old 02-10-2020, 03:06 AM
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G.Alexander G.Alexander 目前離線
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The recommendation has nothing to do with the system itself. A KH in the range of 7 – 8 is just a natural level which works extremely well in a nutrient poor system I have personally not seen any improvement keeping the KH higher, it might just cause TN in SPS corals in a nutrient poor system.

G.Alexander
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  #4  
Old 02-11-2020, 02:00 PM
TravelingPotato TravelingPotato 目前離線
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Thanks jacky and G.Alexander. That makes sense to me. Would you say that in general then, ULNS tanks grow sps slower than the high alk, calc, mag tanks? Or are there benefits in ULNS that counter the lower "growing" parameters? I don't mind if it is slower but I have only been running zeovit for 2 months so it would be nice to know what to expect.
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  #5  
Old 02-12-2020, 04:14 AM
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G.Alexander G.Alexander 目前離線
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I have personally observed that corals do grow very quick in a nutrient poor environment even if the KH is just around 6. From my experience I would say that the coral growth in such a system can be very massive compared to systems with higher nutrient levels and higher KH concentrations.

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