View Full Version : False Water test Readings

12-25-2006, 12:36 AM
Are there other things that can cause false test readings other than Ammo-Lock? I've read somewhere that using products from different companies can sometimes cause false readings... such as Tetra water conditioners with Aquarium Pharmaceuticals testing kits.

Does anyone know anything about this?

12-25-2006, 01:42 AM
Not that I know of. As far as I know the only way to get false readings (besides expired reagents) is with certain ammonia binding chemicals that still allow the ammonia to be counted by the reagent. I think Amquel+ will lock up ammonia but not allow it to be read, but I 'm not sure.

Lady Hobbs
12-25-2006, 04:39 AM
I used Water Clarifier from Tetra once and my pH went from 7.6 down to 5.0. I don't think it was the pH at all but the Clarifier giving me a false reading. Then I poured a big glass of water, added one drop and immediately got the same results. It took me several weeks to get my aquarium to give the correct readings again. Just a wee drop of that stuff and you get some goofy results.

That's the only products I've used that did that.

12-25-2006, 02:58 PM
You should email them and see if they have heard of that before or have an explanation of the cause.

Lady Hobbs
12-29-2006, 05:45 PM
Hi rep.....Just saw your post here. I did email them and got no response at all. I still see it advertised everywhere with "will not change pH". ppttfff

12-30-2006, 03:35 AM
can you say "false advertising!"