Amphispur

Kalkwasser Dosing?

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Hey all,

 

So I will be dosing Kalkwasser in my reef tank here on campus, and I am slightly lost in the mixing and want to be sure I'm thinking of this right. When it says "1tsp/gal" that is saying when I MIX the kalk with RO water, I use 1tsp if I'm using 1 gallon of RO correct? Also this is how I planned on dosing, schedule wise, and checking how my corals are doing each day and testing pH and calcium levels at 12pm. And dosing would start when lights go out, and until it is empty in the morning (calculations say it should be ~720mL per night. Please let me know if I'm missing something, all I've done is two-part so this is new to me.

 

Thanks!

 

Amph

Dosing.PNG

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drauka   

if you can test and judge your rates by Alkalinity tests, much easier to see changes than with calcium testing.  Kalk is what you might call balanced 2 part.  

PH testing - if you want to then go for it but its not really needed, other than to avoid the spikes you get when dosing.  If possible a slow drip of Kalk is prefered.  If your dosing pump is small/slow enough then this will work fine, otherwise does into a highflow area away from corals and fish if possible.

The maximum saturation of 1 gallon of water to kalk-water is 2 tsp per gallon  - this is the water you are dosing NOT the tank volume.  You can get more to disolve but it takes some special considerations.

Edited by drauka

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if you can test and judge your rates by Alkalinity tests, much easier to see changes than with calcium testing.  Kalk is what you might call balanced 2 part.  
PH testing - if you want to then go for it but its not really needed, other than to avoid the spikes you get when dosing.  If possible a slow drip of Kalk is prefered.  If your dosing pump is small/slow enough then this will work fine, otherwise does into a highflow area away from corals and fish if possible.
The maximum saturation of 1 gallon of water to kalk-water is 2 tsp per gallon  - this is the water you are dosing NOT the tank volume.  You can get more to disolve but it takes some special considerations.

I see. My concern is my calc is at 340ppm. Would this raise it closer to 400? I have a dropper setup dropping it in at ~1 drop/sec or two at night.


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Mydraal   

This a nano? How big is the demand for calc in the tank? What kind of corals are you growing out? If you have to dose more than full saturation , you probably need to go back to a 2 part solution. 

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It’s a 150g with brain, frogspawn, zoos, and Duncan mostly. My boss has so much kalk and she’s adamant about using it all (even if it may not be best...)


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drauka   

best way to help is to know your tanks alkalinity demand.  

You can fully saturate the ATO top off water for a 150 and that shouldn't be a problem.  Kalk is a light demand supplement,  once demand goes higher you are pretty much forced to go with either 2 part or a calcium reactor.   For the inhabitants you describe I would think you could get away with only Kalk at least until they get to colony sized pieces.

Kalk is not for raising ALK or Calcium but for supplementing them.  So you will need to dose the tank parameters back in line (SLOWLY OVER SEVERAL DAYS/WEEKS) with 2 part or water changes and then add Kalk to the ATO as a supplement to keep parameters up.

FYI - 1 gallon of Kalkwasser fully saturated in 150 gallons of water volume is ~5ppm calcium and 0.8 DKH Alkalinity.  

Edited by drauka

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Alright. Is there a two-part recipe down here in the south? Back in Colorado we always used ice melt for the calcium but well, not much ice to melt here! Lol


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drauka   

Pool Calcium is what I used in a  pinch (of all things Clorox brand Calcium Hardness Is what I think I used).  Just have to check the materials label and really research is to be safe.  OR, just order some on BRS and use baking soda for ALK.

If the Boss is wanting to use the Kalk then definitely use the Kalk, but you might still need to use some 2 part to keep parameters in check. 

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Alright. I’ll convince the boss, atleast enough to bring it back up to 380-400. dKH measured 6 again this morning and calc still at 340 after a 30% water change yesterday


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drauka   

ok assumptions 

150 gallon water volume 

ASSUMING that Magnesium levels are in correct range

calcium currently 340ppm

alkalinity currently 6.0 DKH

AKL desired 7.8 DKH

Calcium Desired - 400ppm

Supplements used 

Alk - Baking Soda

Calcium - Calcium Chloride

25 teaspoons of calcium chloride dissolved in RODI water and dosed should raise levels to ~400ppm

6.5 teaspoons of baking soda dissolved in RODI water and dosed should raise levels to 7.8DKH

All that said,  dose those 2 solutions slowly over a few days 

Edited by drauka
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Probably should have mentioned Mag is at 1140. So with 25 teaspoons is that TOTAL over a few days? Or per day. So like if I put 25 tsp in 1g of water, drip in 1/3 gal per day? And also thank you! This all helps a TON.

 

 

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drauka   

You need to raise Magnesium to over 1300 or you are wasting your time.

Those are total numbers.

 

I would suggest dosing 1/3 of the calcium solution each day (drip method would be great)  and 1/3 of the Alk solution each nigh (drip method preferred)

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I’ve read Epson Salts, but I’ve never tried it. I found a calculator that told me ~1300g of them. Is that the best (inexpensive) method?


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drauka   

Do you do regular water changes on the tank?  If so the yes - epsom salt is a decent magnesium supplement.  Its magnesium sulfide.  The sulfides can build up in a tank without water changes,  unknown if it will cause an issue or not but best to keep up with water changes.  

Make sure the epsom salt is just plain and not scented or anything.  Should be pretty cheap.

 

I come up with a little over 1000g of mag sulfate to get mag up to 1320 in a 150 gallon tank.  Higher is fine, up to around 1450 to 1500ppm mag.  Above that some stuff might not like it.

 

You can dose the mixed magnesium dose fairly fast,  a fast drip would be ideal.  Dose it first then the other supplements

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So would it be alright to dose mag during the day then? So like Mag in the morning, calc in the afternoon, and alk at night?


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Okay and then last question. So once the levels are raised, the kalk is all I need to supplement nightly then? Or do I continuously dose the three forever lol


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drauka   

Only way to know that is with regular testing.  

You can add kalk to the top off water now, while you are bringing the numbers up to see if it helps keep up with the corals usage while you are raising the parameters.  Once you get the parameters in check try to test every few days and adjust the amount of kalk you add to the top off to keep the numbers pretty steady.  Remember though that once you reach the 2teaspoons of kalk powder per gallon of rodi then you are maxed out with kalk and will be needing to start dosing 2 part to keep parameters in check.  

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Alright so here is my oh so wonderful drip system running right now. I essentially took an old bottle, air hole at the top, drip control near the bottom, and let gravity work her magic. 4db65c59b18c908c8f6979a099e7f01d.jpgb6ee4f95e0cf6fcf0bc9f3937c7b4fc1.jpg


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