Upgraded tank

[reefrider777]

Good morning. I have two questions. Yesterday I went from a 80g system to a 140g system. This morning I checked All as I do everyday and the Alk was 6.8. I added some buffer to slowly bring it back up to 8.3, my normal target Alk. The water I mixed averaged out to be 8.6.

1st...Did my alk drop because of buffering?

2nd...I dose 2 part, will I need to increase my dosing bc of the larger water volume even though I have the same amount of corals?

Thanks for the help

 

[mtraylor]

Morning. The first place I would start looking for that Alkalinity change, would be the new water you mixed up. What was the alk of that water? Did you test it?

 

[Randy Holmes-Farley Verified Community Expert]

Good morning. I have two questions. Yesterday I went from a 80g system to a 140g system. This morning I checked All as I do everyday and the Alk was 6.8. I added some buffer to slowly bring it back up to 8.3, my normal target Alk. The water I mixed averaged out to be 8.6.

1st...Did my alk drop because of buffering?

2nd...I dose 2 part, will I need to increase my dosing bc of the larger water volume even though I have the same amount of corals?

Thanks for the help

The first question is not clear what you are asking. Buffering means a variety of different things in different contexts.

With a larger volume, you will need to add more to give a certain boost, but the demand in the tank didn't rise just because the volume is larger.

Regardless of these answers, just adding more of both parts is the appropriate response to alk being low, unless calcium is already too high.

 

[reefrider777]

Morning. The first place I would start looking for that Alkalinity change, would be the new water you mixed up. What was the alk of that water? Did you test it?

I mixed 3 brute trash cans with 40g in each. The first was 6.7dKh, 2nd was 8.6dKh, 3rd was 9.7dKh.

The first question is not clear what you are asking. Buffering means a variety of different things in different contexts.

With a larger volume, you will need to add more to give a certain boost, but the demand in the tank didn't rise just because the volume is larger.

Regardless of these answers, just adding more of both parts is the appropriate response to alk being low, unless calcium is already too high.

I meant by "buffering" as the new water that was added to the system (that still doesn't make sense as I type this). I didn't think consumption would change just because water volume increased.