ph levels at 8.8?
 

hey guys, my ph seems to have leveled out at 8.7-8.8, and every time i add new weater it still goes back up till it plateaus out at this mark, is there anything i can do to drop it or get it to stablize at a lower ph? the tank has been up for about 7 weeks now and all my other params are where they should be, ammonia-0 , nitrates-0 , nitries-0, and sg 1.025

How old is your test kit and what is your alk. at? I would test the makeup water as well.

test your kit
 

test your kit to something definite something like ph7 buffer. what are you using to test?

a digital ph meter is waht i am using to test

Hi, check your calibration on the probe. If you can't calibrate, probably time to get a new probe. Pinpoint meters suggest probe replacement for pH at 18 months. Regards Ken

http://www.advancedaquarist.com/issu...e2002/chem.htm

There's a link to making a calibration solution using household borax but the link is dead. :mad:

Good 'ol archive.org:
http://web.archive.org/web/200210150...io/default.asp

Calibration fluids are cheap from LFS and if accuracy is your what you're after I would definatley have to reccomend not DIY'ing pH solutions.

Most hydrophonics stores also carry these solutions.

Also, has the probe ever dried out?

i have checked the ph meter against 2 test kits and found that it is accurate. i am totally at a loss for what to do .