How fast can I raise alk levels?

[Marinexx]

This is an interesting discussion: for my tank I have been running on the high side (10.5-11.5) for a year now. I have been thinking of trying to lower it closer to 8.0. I wonder if I should even bother?
I use IO salt, do a 10-15% water change weekly, while ALK is a very consistent parameter for this 75 gal fish and coral tank with a 20 gal sump, which is just starting to grow macroalgae after 3 previous attempts.
Maybe I should just leave it at 10? I use kalkwasser to maintain Ca ~450 and pH ~8.3.

 

[ClownSchool]

This is an interesting discussion: for my tank I have been running on the high side (10.5-11.5) for a year now. I have been thinking of trying to lower it closer to 8.0. I wonder if I should even bother?
I use IO salt, do a 10-15% water change weekly, while ALK is a very consistent parameter for this 75 gal fish and coral tank with a 20 gal sump, which is just starting to grow macroalgae after 3 previous attempts.
Maybe I should just leave it at 10? I use kalkwasser to maintain Ca ~450 and pH ~8.3.

From what I understand, lowering alkalinity may also lower pH for a time. If parameters are steady, I wouldn’t risk it.

 

[Floyd-]

Im going to slowly bring it up to 9dkh and then stop dosing and see where it drops over a few days and then calculate daily usage.

I have added 17ml a day since 9/1/22 and im still not to 9dkh yet. Its a slow process for sure.
Also since I have upped my alk my BTA split! Its the first split I have ever had in a year and a half of reefing.

 

[ClownSchool]

I have added 17ml a day since 9/1/22 and im still not to 9dkh yet. Its a slow process for sure.
Also since I have upped my alk my BTA split! Its the first split I have ever had in a year and a half of reefing.

Anything more than a point per day is dangerous.
Here’s a calculator that will help you determine how much to add to get you where you want to be. Please read the entire result window so you know how/ when to break up the dose over a number of days if necessary.

Alkalinity Supplement Calculator - Bulk Reef Supply

Bulk Reef Supply - Saltwater Aquarium Supplies for Reef Tanks

www.bulkreefsupply.com

 

[Floyd-]

Anything more than a point per day is dangerous.
Here’s a calculator that will help you determine how much to add to get you where you want to be. Please read the entire result window so you know how/ when to break up the dose over a number of days if necessary.

Alkalinity Supplement Calculator - Bulk Reef Supply

Bulk Reef Supply - Saltwater Aquarium Supplies for Reef Tanks

www.bulkreefsupply.com

Ive read that before and it doesnt show my additive im using so I just used the calculations on the bottle and figured out how much to dose.

I figured about another 3-4 days I should get at my goal, from there I can start dialing in daily consumption.

 

[Dburr1014]

There are a lot of threads on raising alk per day.
No more than 1.4dkh is the standard.
0.2/0.3 is fine, just will take a while...

RHF says 1dkh

How much can I raise my alk in one day?

I'm trying to get my alk up. Currently I'm dosing kalk in my ATO, but I haven't figured it how much I need yet. My alk is still dropping about 1.5 per day. Can I dose 2dkh? I'm just using baking soda, dissolved in RODI.

www.reef2reef.com

Just remember, it needs to be broken up to several doses.

 

[Floyd-]

No more than 1.4dkh is the standard.
0.2/0.3 is fine, just will take a while...

Awesome! I was shooting for .3dkh a day so its good to know I can triple it and be safe.