i used one before. i think it was easy and accurate. unfortunately, i knocked the monitor into the sump without realising it, and it fried. it is not cheap, so i never replaced it.
im assuming this is for your calcium reactor. i have 1 for my geo and let me say it is worth every penny. your life will be much simpler if you have one controling your solinoid for your co2. if you dont have it you will find yourself guessing the ph in the co2 reactor, counting bubbles from your co2, guessing if the media in your reactor is releasing calcium. i find that life is much easier with one. just my opinion.
it can be off by .1 or .01 or something. if its not accurate after calibration, it is usually because of a defective or damaged probe. imo if its off by a tad bit, its still better than not having 1. dunno what the reviews are but i wont be disconnecting mines ne time soon.
Ah ic, i got you all wrong. i thought you wanted a ph controler for your CA reactor. my bad. i dont have a ca monitor, i have a ph controller for my ca. soory!!!!!!!
wow that thing is 250. what are you using to measure your calcium. i have a salifert test kit and only test once a month so its kinda not worth getting for me.
it can be off by .1 or .01 or something. if its not accurate after calibration, it is usually because of a defective or damaged probe. imo if its off by a tad bit, its still better than not having 1. dunno what the reviews are but i wont be disconnecting mines ne time soon.
Are you talking about a PH monitor then(being off by .1 or .01)?
filatelico
Take a look at the artical. I was going to get one until I read the artical. Like Pham411 I dont test enough to make the cost worth it.
My tank is 150gal, I add about 60 to 80 ml of the 2 part every day. My readings are fine 3.0 Alk, 380 CA (working to 400) corals and fish are happy. I do keep adjusting CA and Alk individually, seems like the 2 part is not enough to keep the levels, and that is why I keep testing twice a week. In a week the alk can drop to 2.0 and CA to 340 (using the 2 part) I do not test for magnesium, but I will (need test kit). What will cause a low/drop on Magnesium?
Do you keep it all the time in the water, or only when you want to check the CA?
How often do you have to calibrate, and how long does it take? easy?
Thanks
the result is instant
you keep the probe in water all the time, you may turn off the monitor
if you leave it in, you only recalibrate when you clean the probe. calibrating is easy, you just match a 400ppm solution.
My tank is 150gal, I add about 60 to 80 ml of the 2 part every day. My readings are fine 3.0 Alk, 380 CA (working to 400) corals and fish are happy. I do keep adjusting CA and Alk individually, seems like the 2 part is not enough to keep the levels, and that is why I keep testing twice a week. In a week the alk can drop to 2.0 and CA to 340 (using the 2 part) I do not test for magnesium, but I will (need test kit). What will cause a low/drop on Magnesium?
I'm going to reference a thread of a couple of days ago where I had the problem you are describing. I'm using a great Brand of 2 part, have been for 4 or 5 years. Never had a problem keeping Ca or Alk in correct parameters until I set up my current 135 reef. Here's the link - Amphibious' 135 gal Reef Find a long post by me, it's #160 marked in the upper right border. It explains the correlation between low magnesium, high Alk and the inability of a system in those parameters to maintain a high enough Calcium level. By the way 380 to 400 Calcium is not high, it's minimum.
Dick
__________________ Amphibious
Reaching my 70th BD, I realize that I cannot help but grow old. However, I refuse to grow up!!! My wife would tell you, "He may be 70 but, He's going on 17". Life is wonderful with a woman like that.
icon under there name and give them Reputation points
USA 
.
