Parameter testing question

[Jessie]

I am colorblind which is making reading the parameter tests (the test tube kind or dip strips) very difficult (probably impossible since I really have no idea if the color I'm seeing is in fact the color it is lol). I am wondering if there are any parameter tests that use numeric value rather than color value? I asked at a LFS and he just looked at me like I was crazy or some freak of nature and had no information. The ones that are giving me the most problems are the Ph, Ammonia, and Nitrate tests.
Thanks

[IanWR]

I think there are digital checkers that Hanna makes. Not sure the price, but from what i understand they work quite well.

- Ian

[Reef Pilot]

I use API for alk (KH) and Ca testing. You add drops until the colour changes. So that might work for you, if you can detect a colour change.

For phosphates (P04) I use the Hanna digital checker. Very accurate, but kind of expensive.

Don't bother with pH testing. Not needed for salt water.

Don't have a good suggestion for you with nitrates (N03). All the ones I know use a colour comparison. Maybe take to your LFS for testing.

Once you are fully cycled, you won't need to test for Ammonia on a regular basis. Maybe take to an LFS for that if you suspect it.

[Fesso]

Hanna Checkers are the way to go. They are around $50-60. One you have the checker you only need to buy regent refills and so they aren't too expensive in the long run.

http://www.hannachecker.com/index.php?option=com_content&view=category&layout=blog&id=1&Itemid=53

[Jessie]

I love those Hanna checkers! Those look perfect - I'll grab a couple that I'll be using often and then just take my water in to the LFS for more specific testing. Thanks a lot!