Reef Test Kit

[Dave66]

LoL. Boron is one of the 11 major ions (minerals) in natural sea water. Ones you really need to be concerned about are Calcium, Strontium, Magnesium. Test for iodine, which as iodide in marine water, is a trace element. If you were keeping Xenia species corals I'd recommend that kit. NSW natural Iodide levels are .05-06.

Natural sea water levels: Calcium 380-450 ppm, Magnesium 1250-1350 ppm, Strontium 7-8 ppm. Just FYI, Boron is about 4 ppm in natural sea water.

Dave

[Ashurbarnipal]

Ahhh. Thank you very much. I have to say, this has cleared up a lot for me.

And actually, I'm not too concerned about nitrate atm. I'm replacing nearly a gallon of water a day to evaporation alone, plus 2 gallon water changes a week.

[Dave66]

What water source are you using for top offs? If you get a hinged glass top for your tank, it'll prevent rampant evaporation like you are seeing.

I use auto top off myself, and use RO/DI water in the top off water container. Here's a complete auto top off system.

Dave

[Ashurbarnipal]

I use distilled right now, but am looking into an R/O unit after I test the water in it.