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Old 11-25-2011, 04:59 PM   #1
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Kalwasser Help Please

Once my alkalinity and calcium are where they should be I was thinking on starting kalk dosing. i've been using calcium and soda ash daily but it's geting to be a bother. LOL

I am setting up an ATO today and read thats the best way to dose kalk. My questions would be how much powder do I add per gallon and will the ATO method be sufficient? I'm using a 10g tank as the water reservoir and most likely an aqua lifter pump as the method to get the water over to the sump.

Sound good?

Thanks so much everyone!
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Old 11-25-2011, 10:48 PM   #2
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heres a good link about kalk. i hope it helps ive been considering doing the same way but i decided to go the 2 part route Kalkwasser-Instructions
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Old 11-25-2011, 11:16 PM   #3
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Thanks Paul. 2 teaspoons per gallon it is!
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Old 11-25-2011, 11:46 PM   #4
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2 teaspoons per gallon isnt always correct Testing to see what would maintain your system is always best
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Old 11-26-2011, 07:53 AM   #5
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I've been testing about every other day since I've been using the soda ash and calcium.....should I do the same with the kalk? What is a good recommended starting point then?

Thanks guys! I appreciate the help!
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Old 11-26-2011, 08:28 AM   #6
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2 TSP per gallon is the max dose, at which it reaches 100% saturation in RO water. What I did was measure my weekly drop in Ca without supplementation or water changes then calculate daily loss. Having a rough idea of how many gallons of daily top off I add, factoring that 2tsp Kalk per gallon will raise your Ca by 24ppm, I was able to determine my dosage. My Alk stays up nicely, but really it's a byproduct of the dose I use rather than calculated.

Start small, & work up if you're not sure. Keep an eye on your Mg levels as well as saturated Kalk can cause Mg to precipitate out.
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Old 11-26-2011, 08:32 AM   #7
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Once you get setup and stabilized, you shouldn't need to test that often. If you are doing a continual & equal dose, your levels shouldn't stray from target unless you add something that uses more, or your corals grow fast. I went from every two days at first, now weekly testing and will probably cut back to monthly once I'm confident in my results.
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Old 11-26-2011, 08:43 AM   #8
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I lose about 1-1.5 dkh each day and about 15-25ppm of calcium. My mag has stayed very steady at about 1300-1350. I have some sps and a bunch of LPS as well as the normal lot of softies, all in all I have a lot of coral, about 30 or more at least.

Where would you think i should start off at? Oh, I also lose about 1g a day due to evaporation. I've been topping off twice a day so far. Would 1 teaspoon a gallon be a better place to start?

Thanks very much, I generally have a good handle on things aquaria but this dosing is all new to me. lol
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Old 11-26-2011, 09:24 AM   #9
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I would start at 1.5 tsp per gal and monitor/adjust as necessary. Keep checking your mg as you dose as it may drop. If you don't have your ATO setup, I would run a gallon drip container rather than top off in 2 large amounts in a day as it can spike your pH.

I lose about 3/4 gal per day & drip at about once per 2.5 secs from airline tubing which is pretty close - 2 second drips would be close to a gallon.

One word of caution, I'm not familiar with flow rates of the pump you're using, but have fail safes, 10gal of kalk pumped in at once would be catastrophic.
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Old 11-26-2011, 09:28 AM   #10
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I plan on using an aqualifter pump, it goes at 2.5 g an hour. I am in the process of setting up the ato today hopefully...

Thanks for all your help btw, much appreciated.
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