Someone explain me some math..

[wayner]

Sailfert here, Hanna checker for Alk - not that this really helps you

[Sunee]

Lab grade distilled. Geez I've just been using regular old distilled. It is the 0.1 ml of tank water that gets me, so easy to mess that up if you are not super careful.

Anyway, I used the Elos Ca kit before I got my Hanna and it seemed to be okay.

Originally Posted by Delphinus

Maybe we should be checking to see if the instructions have an expiry date not just the reagents? Geeeze.

I can't say I noticed the bad math example before on the instructions but it's been a long time since I looked at Elos Ca test kit instructions in detail. The last kit I had was also consistently giving me bad readings of .. interestingly enough I think it was always 450 as well. I can't remember for sure I'd have to check my notes but I stopped using the Elos Ca test kit. I like the Salifert best. I did pony up for a Ca checker from Hanna but it has its own issues (basically you test 0.1ml of tank water which you have to add 0.9ml of lab grade distilled water (doesn't everybody have this? I carry some in my wallet just in case because you just never know when you're going to need some lab grade distilled water) and when you're doing a test on such a tiny sample it just has to be prone to fluctuating readings, I would think .. esp if you cheap out and just use "regular old vanilla RO/DI" instead of "lab grade distilled water.")

[windcoast reefs]

Originally Posted by Aquattro

Jake's got enough lately

The kit is easy enough to use, although my test showed Ca at 450, which is higher than I would have expected. Salifert generally gives me about 420.

Lol yeah i think I have! Tank/ fish room is gonna get crowded really soon! I find that the elos kits are all kinda funky. I usually test salifert and then elos and try and change the math on the elos kit to give me the exact same result as the salifert kit. Takes a couple of tries, but it gets me the best result.