Kalk or 2 part?

[.Haliax.]

I’m coming to the point where I need to dose to maintain alk (120g mixed reef, ~8 months old). My normal daytime ph is 8.2-8.3 but I don’t know how low it gets at night. Is this too high to dose kalk? Should I just go with 2 part? Today’s alk was 7.2, and I’d like to get to 8.5 dkh.

 

[BanjoBandito]

What’s the consumption rate? Livestock?

 

[.Haliax.]

Consumption rate is about .3 a day and increasing.

Livestock:

Poccilopora

Purple Stylo

Acro

Toadstool

Anacropora - green

Zoanthid - Gobstopper

Paly - Green

Paly - Blue

Monti Cap - Red

Gonistrea - Paint Splatter

Cephestrea - Gold

Zoa - LA Lakers

Zoa - Darth Maul

Zoa - Scrambled eggs

Zoa - Royal blue

Rhodactis - Superman

Duncans

Frogspawn - "OG Indo"

octospawn - gold

Frogspawn/octospawn - highlighter green

Hammer - green

Anacropora - TNT

Leptoseris - Jackolantern

Hammer - gold rainbow

Torch - jester

Chalice - orange crush

Hammer - green base

Mushroom - Orange yuma/green fringe

 

[neonreef3d]

2 part should be just fine… I use the esv B-ionic 2 part. My alk is at 8.9, but I have to add more calcium so I dose with an additional Red Sea calcium once a day on top of the 2 part .

 

[Randy Holmes-Farley]

Either limewater (kalkwasser) or a two part will do fine in this situation. You hardly notice any pH effect at the low demand indicated (assuming the dose is properly spread out).

 

[nereefpat]

Is this too high to dose kalk?

As long as you are aerating the tank, powerheads/skimmer/etc, this wouldn't be a concern.