BackbayReef’s 550gal: angels, tangs, and acros!

[fishguy242]

Pinpoint,but never used ORP,or cal reactor... :rolleyes:

 

[danreef55]

Can you calibrate the probe without using your Apex. It has onboard capability to calibrate. I am using a Milwalkee ORP without issue. Did you get the double junction version?

 

[backbayreef]

Can you calibrate the probe without using your Apex. It has onboard capability to calibrate. I am using a Milwalkee ORP without issue. Did you get the double junction version?

There is no calibration for ORP. I’m using a MC125 and ordered the same probe - 921b!

https://a.co/d/1cY8O98

 

[backbayreef]

It’s unlikely both the Apex and Milwaukee are bad! And if my ORP is at now 30 (or 99 before) my tank would have been toasted.

Do I have to wait a few days to get a correct reading?

 

[backbayreef]

If I unplug it, ORP is reporting 450+ mV (now 513) which I know is wrong. Waited for a week for this crap. Seriously

 

[danreef55]

It could take up to a week to settle in. There is a way to clean the new probe I think it is lemon juice BUT please research first.

how about sticking the probe in a known ORP reference solution and see what reading you get. It could provide insight

 

[danreef55]

It could take up to a week to settle in. There is a way to clean the new probe I think it is lemon juice BUT please research first.

how about sticking the probe in a known ORP reference solution and see what reading you get. It could provide insight

I just checked the Hydros manual and there is no way to calibrate the ORP probe. You rinse the probe in rodi and dry it off. Stick it into the reference solution and then adjust the 'offset' to compensate for minor differences.

 

[backbayreef]

I just checked the Hydros manual and there is no way to calibrate the ORP probe. You rinse the probe in rodi and dry it off. Stick it into the reference solution and then adjust the 'offset' to compensate for minor differences.

I’ve stick it in another tank — still reading 15-20. Super weird! oh well, not meant to be. I’m going to order a different brand to see…

 

[backbayreef]

Friday night video of both tanks - TGIF everyone! :)

 

[danreef55]

Friday night video of both tanks - TGIF everyone! :)

ABSOLUTELY AWESOME:star-struck:

 

[backbayreef]

ABSOLUTELY AWESOME:star-struck:

Thanks — SPS frags finally went in and doing well. Hope things will grow! ;)

 

[backbayreef]

ORP update - the reading went from ~15-17 to now 110. Guess I’ll wait a few more daysto see. What should the value or range be - 300’ish right?

I can almost see the other side of the tank now - been running 2hrs every night at lvl3.

 

[danreef55]

ORP update - the reading went from ~15-17 to now 110. Guess I’ll wait a few more days to see. What should the value or range be - 300’ish right?

I can almost see the other side of the tank now - been running 2hrs every night at lvl3.

300 to 450

 

[backbayreef]

ORP is at 200 now — I still don’t trust this probe

 

[danreef55]

ORP is at 200 now — I still don’t trust this probe

I wouldnt trust it either. Stick it in a reference solution and see what reading you get

 

[Lbrdsoxfan]

Try the reference solution, but Orp probes take several days to "settle in". You know when your good when you get something like this on the daily, the orp probe should run cyclic to the PH. Ph goes up, Orp goes down and vise versa. Of course when running ozone, the numerical range of the orp will be higher, but same effect.

 

[backbayreef]

Try the reference solution, but Orp probes take several days to "settle in". You know when your good when you get something like this on the daily, the orp probe should run cyclic to the PH. Ph goes up, Orp goes down and vise versa. Of course when running ozone, the numerical range of the orp will be higher, but same effect.

Thanks - I have the Apex El so doesn't have ORP so it's my first time. It’s way off and doesn’t follow your pattern yet.

 

[Lbrdsoxfan]

It doesn't matter which version, whether it's a EL, A1, A2 or A3, it will read something similar.

I'm on a A2 currently and it was the similar with a A1 classic, before my panel blew out. Give it about a week to break in the probe and it will start setting daily trends. I figure your using a PM1 with the Apex El?

 

[marcus aurelius]

Pics of the tank — lots of work ahead!

Super sweet

 

[backbayreef]

It doesn't matter which version, whether it's a EL, A1, A2 or A3, it will read something similar.

I'm on a A2 currently and it was the similar with a A1 classic, before my panel blew out. Give it about a week to break in the probe and it will start setting daily trends. I figure you’re using a PM1 with the Apex El?

I actually need another PM1
Apex EL: tank pH
PM1: CaRx, current used for Ozone

I’m not suggesting that the reading is off due to the Apex version. I’ve plugged into the Milwaukee controller and the reading was similar (low). I’m going to buy another brand of the probe. Perhaps the Milwaukee is bad?