Dosing rate of Kalk and ratio to total volume?

[WhatCouldGoWrong71]

Are you dosing 100% of your daily evap? I’m currently evaporating about 3 G a day. I am dosing 6L over 13 hours @ 8.33 ml a minute. How high can I push doing amounts? Over heard of people biking their tanks by over dosing. Is there a rule of thumb?thanks for the help.

 

[WhatCouldGoWrong71]

3 gallons of evaporation plus I am dosing 6L of kalk. So I have 3G’s I could increase my kalk dose up to.

 

[Garf]

3 gallons of evaporation plus I am dosing 6L of kalk. So I have 3G’s I could increase my kalk dose up to.

Depends upon your Alkalinity demand. You can increase kalk as increasing demand dictates, but no higher than your evaporation, obviously.

 

[piranhaman00]

You need to refer to alk demand. If you haven’t been checking alk you are not doing it right

 

[WhatCouldGoWrong71]

@piranhaman00 @Garf - My ALK demand has increased greatly since keeping my PH between 8.4 and 8.5 (I switch between sodium hydroxide and bicarb per rules in my apex). I am dosing about 200 mls of ALK daily at times my DKH won't keep up. I really don't want to increase the ALK I am dosing for fear of sand hardening, which I am not currently experiencing (I had this happen on another tank that I switched to a carx). If the dose per minute really isn't an issue it sounds like I can push up my amount I dose.

1) Should I expand the hours I am dosing it and back down on my dosing schedule? I when I am dosing KALK I am not dosing ALK. Essentially cutting back on dosing 1 of my "2 parts".
2) If you say I am doing it wrong, above is my scenario - What's the correction?

 

[Randy Holmes-Farley]

I dosed limewater/kalkwasser to replace all evaporated water. For the first few years it was less that saturated, then in later years I used saturated kalkwasser.

 

[exnisstech]

You can dose up to your evaporation rate of saturated kalk. If you need more you can dose a kalk slurry. That is something you would have to research. I know of it and how it works but have never actually done it.

EDIT: I have one tank on kalk. I dose 7200ml saturated kalk daily over 24hrs using a brs 50ml minute pump on a digital timer. That is just a little less than my evap rate.