So I did my first manual testing on the tank in about three weeks or so. Not all the tests, but just a few.
First, Alkalinity. Of course I am still running one of our initial prototypes on my system (yes, it is still running and I have not had to do one single thing to it. - not even calibrate - four tests a day for many months now). So I tested the Alk with a hanna checker, twice, and it came up at 10.1. Our Alk tester has always come in lower than the Hanna and there are some reasons for that I won't go into here. Anyways, it usually was about .5-.6 lower. this time it was .98 lower. So it looks like I need to do a calibration. Pretty easy. Very similar to how you would calibrate a pH probe.
So the next test I ran was my phosphate test. I use the Hanna ULR checker. I ran it twice. I could not believe my eyes. What!? ZERO!
Well that may sound good for some of you, but for me I just could not understand it. I do not even run GFO! However, I do have about a third to a half a cubic meter of three kinds of macro growing in my sump. Still though, I guess its time to up the feedings! I think I notice it too in the corals.
The last test I ran was for Potassium. My tank can't seem to keep a high enough level of K. I added another half bottle of TLF Potassium last week and my tank still tested out at 390. Now 390 is not bad. NSW is supposedly about 400. However, much has been talked about elevating K levels in home reef tanks to help with coral color and health. Justin Credebel was one of the first guys to really hone in on this and he runs his crazy high - something like 800. Mark Callahan told me he runs most of his tanks at around 600. So, I think I will be pushing for at least 550 on this tank and see how it goes.
To that end, I figured there has to be a cheaper and easier way to get KCl for the tank. So I read some stuff here on R2R and around the internet that the Mortons KCl might be the ticket. I picked some up and I am perfecting the process right now. Even without Mortons, there are other bulk suppliers of KCl out there so you could mix your own more economically if you happen to have a large tank. For smaller tanks, and tanks looking to keep their numbers near 400, its not worth messing with it.
So that's it for now - sorry, no pics - but at least you are up to date. If you want pics, hop on over to Revs thread, I think it is about that time of year that he will post a FTS!
