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reefbegood
10/01/2009, 09:20 PM
Tank 135 cube, 29 sump

geo 618 Reactor about about 23 Bpm and 20 ML a
min
H&S A150

Alk 9-10 DKH

Cal 475

temp 80-82

Ph Low 8.5 high 8.61

every thing is doing great but i get worry d when it goes over 8.6

Billybeau1
10/01/2009, 09:31 PM
How are you measuring pH ?

tmz
10/01/2009, 09:58 PM
I would also suspect a measurement issue,assuming the Geo 618 is a clacium reactor and not a kalk reactor.What is an H7S A150?

reefbegood
10/01/2009, 10:20 PM
cal reactor
H&S skimmer
pin point ph
just re calib it

Billybeau1
10/01/2009, 10:25 PM
Well, high pH is almost always a measurement error. The Pinpoint is a fine instrument so a couple of things come to mind.

First is electrical interference. Try taking a cup of tank water and measuring it away from the tank.

Second is a dirty probe. If the probe is not cleaned properly before re-calibrating, it could be giving you a false high reading.

Either way, I would not be too concerned as high pH is very rare. If your tank looks good, it probably is. :D

reefbegood
10/01/2009, 10:42 PM
Thx for the help will try that

Billybeau1
10/01/2009, 10:44 PM
:thumbsup: