PinPoint pH monitor help/tips?

[rz1a]

i picked one of these up locally for a good price

so i need some advice on how to take care of it

it says to take off the rubber thing and calibrate it with #7 or 10 or both, which i did

i rinsed in warm tap water, calibrated with 7, rinsed again, calibated with 10 and kept doing it until they were were both okay

so do i leave it without the rubber cap when i use it?

also, it says to never have the probe dry. what exactly do i store it in if i dont use it?

[rz1a]

btw, when the monitor is close to the tank where the probe ill have a low reading of 7.8-.9

but when the monitor is farther away, like 4 feet, it reads 8.5 range around there, little lower

[rz1a]

randy said its because of the equipment around my tank-- itll interfere with the reading. it reads 8.03 with lights off

[SoLiD]

Is someone gonna chime in and help him cause he's got me. I just got a new Pinpoint pH Controller today and I'm gonna see if I get similar results. I will let you know...

[DrMark]

Sounds as if calibrated correctly. I have this unit. As for any interference, I dont have much to say. I havent seen that with mine.
As for use, cap stays off as long as probe is in water. I keep mine in the water. Ideally need to clean it once a month with a soft brush. There is specific storage fluid that can be purchased to use with the original rubber cap.
mark

[LoneStar]

Yeah when in use, keep the cap off. As Mark said, you can get some storage fluid.

If you are taking it out to clean the tank, just keep it submergerd in some tank water till you finish your maintenance.

As for your different readings, other equipment can cause interference with the reader.... It just depends on what is close by to it (other electrical equipment, lights, or ballasts).

I kinda wonder if line ac noise from devices on shared outlets would cause problems too (but doubt it since you would think they would test for that when designing the controllers)

[rz1a]

randy farley-holmes says that they get interference with equipment like metal halide ballasts. something about RF frequencies-- after you find a good spot for it itll be very reliable.

calibrate it monthly and do as DrMark said by cleaning it with a soft bristled toothbrush once a month

[rz1a]

i think i got everything settled now. couldnt believe how low my pH got at night. it was down to 7.6, then then 7.9 when lights were on. added some alk to bump it up a couple dKH and pH went up to 8.0-8.1. with kalkwasser its up to 8.2. this thing is very helpful

[atxchris1234]

link if possible?

[SoLiD]

Yes, pH monitors are worth every penny IMO.