有机碳源问题跟KH问题

看贴不回帖

此贴太强大，已经超出我的知识范围，无法回答，只能帮顶了。

OK玛丽K

actually it will depend on several factors, not only the actual volume of the acid added, but the concentration and the pKa of that acid and the pH of the water column. As acetic acid (vinegar's primary organic acid) has a relatively weak pKa, the extent that Le Chatelier's principle will drive the conversion of bicarbonate/carbonate buffer to CO2, or carbonate---> bicarbonate will depend on the amount of acid added, rather than just on the amount of ionization of the acid (the pKa, here, it is the strength of the acid's ability to provide protons to the solution, and for acetic acid, it is relatively low at a seawater pH of 8.5) Rather than deplete the alkalinity buffer resent in the water column, just stop supplementing it and add calcium only for a bit, and perform water changes as Kevin has already suggested. Although the conversion of bicarbonate is not the end of the reaction, it is the first step, and progression of the reaction wil totally depend on the concentration of CO2 in the water, CO2 in the atmosphere, the amount of buffer present in the water column, and the actual pH of the seawater.

OK玛丽K

The only time you really need to consider using vinegar to drop alk and pH is when there is some accidental dumping of kalkwasser or other alkalinity or hydroxide source that pushes pH above the 8.8 mark for more than 5 minutes. At that point, you'll need a pH meter to determine how much vinegar to dribble into the overflow to reach 8.6, then stop. At 8.5, I would not worry too much about the system, and I would suspect that thisvalue was a measurement at the end of a day anyway. I know folks that would kill to have the alkalinity at 10 or more dKH, so don't sweat the numbers at this point if the tank looks good and nothing is withering in the wawter column

OK玛丽K

我这个情况不太适用加醋。因为不是因为加入了氢氧化钙导致的KH的升高。而是盐本身的KH。 第一段看的不太懂 说的是好像反应没没有结束而只是仅仅第一步。取决于二氧化碳的浓度

OK玛丽K

推荐的是 有机碳源添加 KH开始最好是7。如果SPS多会耗KH多所以应该会高一点无所谓

随风飘

楼主 英文很好.. 我完全看不懂..

D.X

OK玛丽K 发表于 2017-9-5 15:45
KH不是碳酸氢钙吗。加醋不是能降低KH吗。猫大

这完全超出了我的知识范畴···

D.X

OK玛丽K 发表于 2017-9-5 20:57
不应该是（HCO3-)+(H+)= H2O+ CO2吗

学霸你好···

D.X

OK玛丽K 发表于 2017-9-5 21:29
推荐的是 有机碳源添加 KH开始最好是7。如果SPS多会耗KH多所以应该会高一点无所谓 ...

兄弟，我唯一知道的实操是，用红海的NO3去除剂是有标的，100L/1ML我记得是，我也用那玩意，但是我没有SPS，没法解答你用了后SPS会怎么样，但是我知道LPS缸每天用说明书推荐的量基本一周就会起白毛···所以我180L水现在都是每2-3天下3-4ml···
但是我又没测NO3，因为珊瑚状态好，开始使用的时候NO3大概在5-10左右，不过有时候我忘了添加会明显长藻快。

OK玛丽K

D.X 发表于 2017-9-6 17:36
兄弟，我唯一知道的实操是，用红海的NO3去除剂是有标的，100L/1ML我记得是，我也用那玩意，但是我没有SPS ...

是的。我是水体400升水所以应该加4毫升 我刚刚开始加所以只加了2毫升 加了10天之后 PO4没了 但是鹿角有点白化症就暂停了