5-in-1 tester

stevef22 · Nov 30, 2018

Has anyone used this on their reef? Reviews seem good but can't tell if anyone has used it on a reef aquarium?

https://www.amazon.com/gp/product/B01ENFOIKA/ref=ask_ql_qh_dp_hza

Flippers4pups · Nov 30, 2018

stevef22 said:
Has anyone used this on their reef? Reviews seem good but can't tell if anyone has used it on a reef aquarium?

https://www.amazon.com/gp/product/B01ENFOIKA/ref=ask_ql_qh_dp_hza

I haven't. Let's see if someone has?

#reefsquad

Brew12 · Nov 30, 2018

stevef22 said:
Has anyone used this on their reef? Reviews seem good but can't tell if anyone has used it on a reef aquarium?

https://www.amazon.com/gp/product/B01ENFOIKA/ref=ask_ql_qh_dp_hza

Hmmm... I haven't seen this one before but one thing makes me nervous. They call it a 5 in 1 sensor. It actually only has 3 sensors. Salinity, Conductivity, and TDS are the exact same readings with different units. It would be like calling a thermometer a 2 in 1 sensor if it read in both F and C.

Flippers4pups · Nov 30, 2018

Brew12 said:
Hmmm... I haven't seen this one before but one thing makes me nervous. They call it a 5 in 1 sensor. It actually only has 3 sensors. Salinity, Conductivity, and TDS are the exact same readings with different units. It would be like calling a thermometer a 2 in 1 sensor if it read in both F and C.

What about calibration?

Brew12 · Nov 30, 2018

Flippers4pups said:
What about calibration?

It would be one calibration fluid for all 3.

stevef22 · Dec 1, 2018

Sounds like it’s too good to be true then but might give it a shot. I could always return it if it’s not lining up with my test kits.

rkpetersen · Dec 1, 2018

I notice that the pH probe is only single junction so you definitely wouldn't want to leave it sitting in an active tank, although with this design that isn't likely anyway.

Liron Mishal · Dec 1, 2018

@rkpetersen
Could you please elaborate on this one?
I got a ph probe for my arduino project and never heard of the junction thing..

L

rkpetersen · Dec 1, 2018

If you're going to leave a pH probe for any long period in a solution that has proteins, heavy metals or some other contaminants, like seawater or even worse tank water, it's better to use a double junction probe. With a single junction, contaminants can cross into the gel and precipitate and in some cases kill the probe. The double junction has a second barrier that further isolates the electrode into its own little gel space, which is much less likely to be contaminated.