Alkalinity is 5,0 DKH, but corals & other parameters are good?

[TbSaysNo]

Could it be my coraline algae, which is basically everywhere in the tank, that is consuming all my dkh ?

 

[twentyleagues]

Could it be my coraline algae, which is basically everywhere in the tank, that is consuming all my dkh ?

So its 6.0 or 6.5 in a fresh batch before it hits your tank?
And yes it could be the coaraline sucking it up if it tests higher in a fresh mix. if not and your fresh mix is 6.0 or 6.5 then its not there in the first place. Again what is the fresh mix? at what salinity are you mixing it?

 

[TbSaysNo]

So its 6.0 or 6.5 in a fresh batch before it hits your tank?
And yes it could be the coaraline sucking it up if it tests higher in a fresh mix. if not and your fresh mix is 6.0 or 6.5 then its not there in the first place. Again what is the fresh mix? at what salinity are you mixing it?

Half cup of the purple salt, and then the rest is the Blue salt. I Go for 1.025 SG

 

[twentyleagues]

Half cup of the purple salt, and then the rest is the Blue salt. I Go for 1.025 SG

and what does your test result say for alk on the fresh mix? before its in your tank?

 

[Randy Holmes-Farley]

Could it be my coraline algae, which is basically everywhere in the tank, that is consuming all my dkh ?

Yes, coralline can be a big user. A soft coral tank with good coralline can use 2 dKH per day.