Cal/ Alk

[phljess]

My calcium and alkalinity stay at about 400 ppm Calcium and 2.0 Meq L of Alkalinity. My question: Is this an acceptable range to keep most SPS under. The reason I ask is because I have started to see some recession on some of my coral mainly Acroporas and encrusting Montiporas. I was wondering if I should elevate my alkalinity or both my alk and cal? I have checked the reef chemistry calculator and my cal and alk seem to be in balance but something just does not seem right.

Other parameters:
Nitrite-0
Ammonia-0
PH 8.1 to 8.2
Nitrate- less than 5 ppm
Mag-1300

210 gallon tank
Water flow
I have 3 1200 gallon closed loops on the tank and 800 gph on my sump return.

 

[twon8]

you need to raise your alkalinity, should be close to 3,

 

[phljess]

Why does the reef chemistry calculator say I am in balance then?

 

[Wiskey]

In ballance just means that the two levels are the same level higher or lower then NSW.

I shoot for 9.0 Dkh alk, and 425 PPM CA, this is also in ballance.

I think NSW is 7.0 DKH, and big problems have been had by many when they drop much below that.

Sorry, I don't know what these numbers translate to in meq/l

Whiskey

 

[LBCBJ]

Divide dKH by 2.8 to get meq/l

 

[Wiskey]

<a href=showthread.php?s=&postid=7989183#post7989183 target=_blank>Originally posted</a> by LBCBJ
Divide dKH by 2.8 to get meq/l

Good info! Thanks.

You definitally need to raise your ALK, then raise your CA to keep them both in ballance.

Whiskey

 

[Serioussnaps]

ALK needs to come up big time IMO

 

[Serioussnaps]

whats your PH at by the way...i got a feeling it may be low as well

 

[phljess]

PH 8.1 to 8.2