Starting off with Kalk in my SPS system

[duke62]

So my calcium and Alk are being eaten up quickly And my ph is dropping with the excess co2 being added so I ordered a Kalk stirrer to help me. I have a 300 total water volume on my system which calls for 6 cups of Kalk it looks like. How much should I start with? Kalk going to be set up on a timer not my ATO . Pics for attention

 

[Evaaron]

How much do you evaporate a day?
I dose by turning a versa to a rate that is slightly under my evaporation rate. So my tank evaporates an average of 2.5 gallons a day so I set a versa to dose 6 ml/min

For reference my tank volume is 200 gallons so I will add about 1 cup of kalk per week to the reactor.

 

[TX_Punisher]

Start low and add. Much easier than starting with 6 cups and having to drain the reactor. I add about 4 tbsp every other week at about 800ml per day dosed. 200g system.

 

[NitrateKillah]

So my calcium and Alk are being eaten up quickly And my ph is dropping with the excess co2 being added so I ordered a Kalk stirrer to help me. I have a 300 total water volume on my system which calls for 6 cups of Kalk it looks like. How much should I start with? Kalk going to be set up on a timer not my ATO . Pics for attention

Kalk is not going to help you with all that SPS. That's a wicked reef bro.

I only have a few hard corals and my Kalk could not keep up with Alk, I just crank up my CalRX to full stream and just top it off with Kalk.

 

[duke62]

Kalk is not going to help you with all that SPS. That's a wicked reef bro.

I only have a few hard corals and my Kalk could not keep up with Alk, I just crank up my CalRX to full stream and just top it off with Kalk.

I have a calcium reactor

 

[duke62]

Start low and add. Much easier than starting with 6 cups and having to drain the reactor. I add about 4 tbsp every other week at about 800ml per day dosed. 200g system.

Am I doing the calculations right? How much should I start off with? My math might be off