I hate test kits!

[whatcaneyedo]

J&L now carries Seachem. I've only used their Iodine kit before but I think I might try them next when my current kits run out. http://www.jlaquatics.com/info/397/S...Test+Kits.html

Remember to check for expiration dates as well. After a certain time some of those test kit solutions do get too old and will give you really incorrect readings.

I once compared two Salifert Alkalinity kits with each other. One said my tank was at 6 dkh and the other said 8 dkh. So there are even differences within the same brand...

[fishytime]

Originally Posted by christyf5

Split the difference, 9-12 is a good number anyways

Problem with taking that approach is.....how much to dose??? I went to RC and snagged the "store use" Salifert dkh kit and will test with all three kits tomorrow morning. I already dosed the tank with stuff(after testing) this morning so dont want that to skew my results.

[Delphinus]

So what's the over/short that you'll just get a fourth disparate reading?

At least with this 9-12 range, you know you don't want to change the amount at all. If it's 9, you don't want to lessen your dose and if it's 12, you don't want to increase your dose. Ergo, don't rock the boat.. whatever you're doing continue to do so until you have an idea what the number really is.

The Salifert should be giving you a reading in meq/l right? I assume when you say 12.5 it really told you a number like 4.46 which is probably somewhere in the vicinity on 0.05 on the syringe?

[christyf5]

Originally Posted by fishytime

Problem with taking that approach is.....how much to dose??? I went to RC and snagged the "store use" Salifert dkh kit and will test with all three kits tomorrow morning. I already dosed the tank with stuff(after testing) this morning so dont want that to skew my results.

I know, I was just kidding. I have the exact same problem. Elos says 7 Salifert says 9. I just keep dosing the same amount and it stays at the same level. A serious pain the arse though.

Then again, my corals are happy so I guess that tells the tale.

[Delphinus]

I think that's key. I think what's more important is the ballpark figures and the week to week trending.