Increasing KH of top off RO water

[tuggerlake26]

My RO top off water is 2 dKH. What is the best way for me to consistently increase it? Should I be using kalkwasser or could I just dose with Foundation B from Red Sea?

My calcium usually is around 450, so I also don't want that increasing too much.

 

[Cryptocaryon]

RO water should be 0 dkh, what is you TDS meter showing

Why do you want to increase dkh of your top off water?

 

[Tamberav]

You generally dose both parts as a maintenance dose and many products are balanced and hence called "2 Part". You based the dosage off the consumption of your alk. Dosing just one part continuously would toss your tank out of balance.

This is a good explanation: https://joejaworski.wordpress.com/2014/05/19/the-right-way-to-use-2-part-additives/

 

[tuggerlake26]

I'm realizing how stupid this question is so thanks for your patience.

Thought behind my question is obviously the top off water is slowly lowering my alk ahead of any usual dosing to the tank. So is there a way to get ahead of the alk drops from the top off (not from general coral usage, etc.)?

 

[Tamberav]

I'm realizing how stupid this question is so thanks for your patience.

Thought behind my question is obviously the top off water is slowly lowering my alk ahead of any usual dosing to the tank. So is there a way to get ahead of the alk drops from the top off (not from general coral usage, etc.)?

Top off water is not lowering your alk. The water evaporates but the alk is left behind in this sense. So if you matched your alk of your top off water to your tank, you would be wildly overdosing alk to your tank and probably be next asking why your alk is 20.

Alk in top off water should be 0. The fact that yours reads 2 means something is in it or the test kit is off.

If alk is decreasing in your tank, something in the tank is consuming it such as coral.

 

[tuggerlake26]

Top off water is not lowering your alk. The water evaporates but the alk is left behind in this sense. So if you matched your alk of your top off water to your tank, you would be wildly overdosing alk to your tank and probably be next asking why your alk is 20.

Alk in top off water should be 0. The fact that yours reads 2 means something is in it or the test kit is off.

If alk is decreasing in your tank, something in the tank is consuming it such as coral.

Got it. I didn't realize the alk would be left behind when evaporating.

 

[jimmy123]

I was also going to ask the same question