Great By Fishfreak on 2/24/2015
Fishfreak would recommend this product to a friend
This is a great add-on for anyone using an apex. I did find out that in order to keep my readings stable is was very necessary to add an addition temp probe to the PM2. At first I was getting crazy numbers and once I added the temp probe it has been spot on ever since.
Work great By Chavinpat on 2/13/2015
Chavinpat would recommend this product to a friend
Read the instruction and warning carefully. Avoid bubble, avoid others electrical equipment, and more importantly do not knock the probe on any hard surface. It is not hard to calibrate, but be sure to use calibration solution from Apex. I tried other brands, and the reading were off.
Fairly stable, but subject to bubble and particle interference By Joe on 1/5/2015
Joe would recommend this product to a friend
I've been running the probe for a little more than a month now, and overall it works as you expect. If you place it in an area of the sump or tank that does not have any bubbles, it is fairly stable and accurate. It does bounce around 0.1 ppt, so if the true salinity is 35, you will get values between 35.1 and 34.9, but this is within the spec of the probe.
I give it only 4 stars because the probe design makes it very susceptible to bubbles or detritus. I use a lot of different conductivity probes for work (i.e. YSI, hydrolab, seabird, etc), but none have this kind of problem. It is a poor design and I don't know why Neptune Systems uses it. You cannot place this probe in an area with bubbles unless you add some kind of protection against them.
disapointed By joe on 12/29/2014
joe wouldn't recommend this product to a friend
I wish I would have known I needed to purchase the Neptune Systems Conductivity Calibration Solution. For as expensive probe, you would think the solution would be included. Neptune should have its dealers note solution is needed. I was disappointed after waiting for delivery to find out I needed to make a second order so I contacted BRS and the rep seemed to care less, I asked for his managers name but he has not provided it. Wait its not over, I ordered the wrong calibration fluid I think? I received the 475 and i need the 53000??? so here i set waiting on my third order to ship??
Kinda Finicky. By Franklyn on 12/17/2014
Franklyn would recommend this product to a friend
The probe is kinda finicky to calibrate. Took multiple times of calibrating to getting working right. After working great for a few months it began to drift. Again was a pain to recalibrate. One calibrated its pretty accurate. I compared it with my refractor and there's a very minimal difference..
Works great By Cesar on 12/13/2014
Cesar would recommend this product to a friend
It was a bit challenging to set up and calibrate but once I did it has performed great. Very precise and a great layer of redundancy to alert me if something has gone wrong with my ATO or automatic water changes.
Neptune Systems Conductivity Calibration Solution is required in separate purchase By Brian on 12/9/2014
Brian would recommend this product to a friend
I wish I would have known I needed to purchase the Neptune Systems Conductivity Calibration Solution. For as expensive probe, you would think the solution would be included. Neptune should have its dealers note solution is needed. I little unhappy to have to place a second order for the solution. Contacting Neptune.
Please add the solution or atleast reccoment to buy it By steve on 4/19/2014
steve would recommend this product to a friend
Please notify it doesnt came with the solution, now i have to order the solution before instal this, i was thinking it came with the solution like the ph one, for the cost of this im preatty sure u can send the solution like the ph. Regards
Awesome product By RedReefer on 1/31/2014
RedReefer would recommend this product to a friend
Once dialed in, this probe is rock-steady! With my Apex I can do automatic water changes and I can set my auto top off to pull RO/DI water OR new saltwater to fine-tune the salinity to 35 PPT, automatically corrected for temperature. I do this from my iPhone! :) however, the calibration procedure is tricky at first. You need to be patient with it and let the numbers "settle" for a good 10 minutes or so and keep the solution the same temperature as the tank-water. (Many people seem to have trouble initially calibrating, myself included.) Once calibrated, it will probably drift down slightly due to micro-bubbles. This is easily fixed (if placed in a sump) by placing the probe at a 45 degree angle away from bubble sources and placing a foam "barrier" a few inches a way from it. I just use a cut-to-fit filter pad.
Spot on! By Christopher on 11/12/2013
Christopher would recommend this product to a friend
This is a great conductivity probe. Some have reported problems and I to had problems initially. I found for me the key was to be patient when the probe is in the settling process during calibration. It takes some time for the probe to settle out. Another issue was placement. I have this probe in the return section of my sump where circulation is great and micro bubbles are at a minimum. One last thing is the temp probe, you must use a temp probe to gain accurate and STABLE readings. If not your salinity reading will change with temperature. Great product by neptune and great service and prices from BRS!!!!
Had some difficulty... By Russ on 10/1/2013
Russ would recommend this product to a friend
I couldn't get mine to calibrate properly through the manual interface and had to do it on the web interface, even after updating firmware. Reading about it on forums says I wasn't the only one with trouble and a lot of people had trouble getting it to calibrate accurately. Still, it seems people (as well as myself) atleast got it really close so we can use it to monitor for changes which is all you really need. Knowing what I know now I still would have bought it, but I think they could have specified a little more that salinity isn't really exactly the same as conductivity.
Excellent product, accurate & dependable By Vanore on 9/13/2013
Vanore would recommend this product to a friend
I was put off on this probe for 6+ months due to the price. I have had it running for less than a week now, and I seriously should have purchased it with my original apex order. If you own a hydrometer, forget about it. use it for backup. This probe calibrated fast, and is spot on. It is an incomparable tool once you use it. BRS also had the best price, and shipping rates.