What alkalinity level do you keep in your REEF?

[christyf5]

I aim for around 7-9, I like to keep it closer to 9 but the tank likes to be around 7 it seems.

I too bought the elos kit after people were complaining about the salifert. I got pretty much the same readings for both elos and salifert. And the elos kit had incorrect instructions which I wasn't impressed with so I've stuck with salifert.

[Doug]

I voted 8 to 9 dkh with both Salifert & Elos. No particular preference. All through the '90,s and into 2000, I always used the cheaper FastTest or whatever the name was. Measured the same as the Salifert I used. Could buy the kits for $10 but dont see the anymore.

I like API for phosphate and nitrate, so may switch to them, as I see you guys say they make alk. test kits also.

[don.ald]

with my elos i get a reading of 6
with the API i get 8
too big of a difference??\
anyone else see different results?

[Myka]

I have lost faith in Salifert alkalinity test kits. They really seem to vary. The one I have now reads 2 dKH lower than the Elos and the Hanna Colorimeter, and the Salifert alk kit I had before that read 3 dKH lower. That's pretty frustrating.

Thanks for voting everyone! Lots of interesting information here...everyone is all over the charts!

[marie]

I've used both salifert and elos. I never noticed noticed a big difference between the 2 and prefer to use salifert but it isn't always easy to get

[don.ald]

i have never used salfert. except for \mg and it seems to be a pain to use IMO compared to elos or API
dont know about the other tests like Ca.
how easy is it to test ca or k with salfert vs elos

[zum14]

Just so I know where to vote, where do you rate the seachem test as for high end, low end? Thanks.