Ph control

[Headless_donkey]

Have you tried the chemical test?

[Texreefer]

yes, testing at 8.1

[Texreefer]

Jim D. wins the Prize.. it EMI i talked to people at marine depot and the probe cable is unsheilded. so i took the controller to my kitchen tabke where there is no other electrical and took some tank water and stuck the probe in,, 8.01ph.. right where it should be.. now how to relocate all my wiring so this thing will work

[JimD]

Well wuddya know.... Whoda figured. I really wonder why they would purposely use an unshielded cable for that application, dont make much sense does it!

[Texreefer]

No it doesn't,,, specifically it is when i plug my computers serial cable into the Aquacontroller.. they plug in right next to each other so i need to find a way to sheild one or the other,, Ace what are you doing? or do you have this problem?

[hobogato]

not doing anything, not having this issue.

[Texreefer]

one last update for those interested:
The ground isolated serial connector (SERIPC9) is used to break ground loops between your PC and the AquaController. In some installations a ground loop is formed when a serial connection is made and can cause erroneous pH and ORP readings. This ground loop can be broken by installing a GISC in the series with the serial cable from the AquaController. If the serial cable is going to be permantly hooked up to the AquaController, then the GISC is recommended. The GISC measures 1.5" x 1.25" x .65" and has one male DB9 connector and one female DB9 connector. Note that the GISC is only for use with the AquaController, AquaController 2 or AquaController Jr.

[hobogato]

i bet that is the black adapter in line on my cable - it was already there when i got it from todd, so i didnt pay much attention to it

[Z4]

do a partial water change without adding anything other than salt and see if that will stablize the ph.

[Texreefer]

thanks for the advice Z4,but there is not a PH issue,, the problem was solved in the above posts