Reef Central Online Community - View Single Post

jimbow · 02/07/2018, 12:18 PM

I've been reading but I guess I am confused. My KH value is low and I am having trouble controlling it. Here are the test readings on my system

SG=1.26 or 35 depending on the scale
CA=450
MG=1400
KH=6.7 Which I know is low
PH=7.9
Nitrates= 0
Nitrites=0
Ammonia=0
PO4=.16ish hard to read exactly but between .16 and .08 I run phosban to keep it down. This is confusing also I see some things that say it can be higher other things say keep it close to zero.

I change about 10% of my water every 2 weeks. I change it daily 8000ML per 24 hours the system is 150 Gal plus about 15Gal in the sump. At this rate the CA and MG stays steady. The new salt water has a KH of 10.7.

I can hand add something to raise the KH but it is not consistent and I'd like to do something to keep it more constant. I have a dosing unit. Is that the simplest way and what would you recommend be dosed?

02/07/2018, 12:18 PM	#1
jimbow Registered Member Join Date: Nov 2015 Location: Idaho Posts: 217	Need to control KH I've been reading but I guess I am confused. My KH value is low and I am having trouble controlling it. Here are the test readings on my system SG=1.26 or 35 depending on the scale CA=450 MG=1400 KH=6.7 Which I know is low PH=7.9 Nitrates= 0 Nitrites=0 Ammonia=0 PO4=.16ish hard to read exactly but between .16 and .08 I run phosban to keep it down. This is confusing also I see some things that say it can be higher other things say keep it close to zero. I change about 10% of my water every 2 weeks. I change it daily 8000ML per 24 hours the system is 150 Gal plus about 15Gal in the sump. At this rate the CA and MG stays steady. The new salt water has a KH of 10.7. I can hand add something to raise the KH but it is not consistent and I'd like to do something to keep it more constant. I have a dosing unit. Is that the simplest way and what would you recommend be dosed?