BReefCase: -> I am glad that you agree with my statement above, which tells me that I actually understood your discussion on Kalkwasser from llowwelll's post on 8/16. Prior to reading that, I have never dripped kalk. From the information you gave in that thread, I have been dripping kalk for the past week and a half, now.
I am wondering if you would be willing to spend some time discussing how much I should be dripping and give a little more information on precipitation of calc/alk? I will try to give you specifics below that you could structure a response around.
Specs:
I am currently dripping about 1 1/4 gallons of kalk per night to replace evaporation. I am using 3 teaspoons of Ball's Pickeling Lime mixed into the 1.25 gals. and letting it set for a minimum of 3 hours prior to dripping. The jug I am using has a spigot about 1" from the bottom, so I avoid allowing the settlement in the tank. I am starting with a simple kalk mixture and will experiment with vinegar later, if needed. I am dripping about 2-3 drops per second. I have a 90 gallon reef with a 20 long sump. The reef consists of a high number of sps and lps corals with a handfull of softies.
Questions:
In your previous responses, you discussed the fact that one must be conscious of the amount of mixing done in the dosing container when no vinegar is used. If I understand correctly, that is due to the lack of CO2 in the container, which causes the calc/alk(?) to mix and precipitate out??? Sorry, I was never good at chem, so please be kind.
If this is true, how do I know how much I should mix. Currently, I am putting the lime in the bottom of the jug, filling the jug, closing the cap and shaking it until the lime on the bottom is suspended in the water.
Since I am dosing from the same jug where I am mixing, do I need to worry about the skim on top of the kalkwassser getting into the tank? Is this even avoidable?
My reading suggests that kalk is used to maintain calcium and alkalinity levels, not to raise them. If this is true, I assume that I need to dose every night as topoff. Is it possible to overdose the tank? What does that mean?
The previous question is based around the fact that I think I have some precipitation in my tank happening right now. I had been maintaining alk around 10 dKh and calcium around 420 ppm. My PH is around 8.1 - 8.15 and goes up to about 8.25-8.3 during and a little after I am dosing. My salinity is about 1.023. This morning I performed a 10 gallon water change using Reef Crystals. Tonight, I started dripping kalk that I made last night. After about one quarter of a gallon was introduced into the tank, I realized that there was some sediment blowing around the tank, as if I had disturbed the sandbed, or something. It wasn't like the tank was a big cloud, but just like there was an unusually high amount of debris in the water column. The PH had raised from 1.17 when I started dosing to 2.5 when I noticed the sediment in the water column. My dKh was about 10 and I think the calcium was 430 - 450 prior to dosing. Those are general estimates, since I hadn't tested since before the water change. OK, so, does it sound like something was precipitating out? Should I be concerned with my calcium or alk levels after this precipitation settles? Is there something I should be doing (ie - Water change???) If stuff is precipitating out, is it necessarily a reason to panic. I mean, could it just be that anything extra will precip out, but the calc/alk levels will remain stable??
...sorry for the long post...
Regards,
Chris
[ December 16, 2001: Message edited by: ReefQuest ]</p>