amtiskaw Posted May 27, 2012 Report Share Posted May 27, 2012 Does anyone else have trouble seeing the colour change in API GH test kits? It's supposed to go from orange to green, but I can't see the difference :smln: I'm pretty sure I'm not colour-blind - according to this online test, I'm not. The kit's only about four months old and the kH test that it came with is fine :-? Quote Link to comment Share on other sites More sharing options...
FraserNZ Posted May 27, 2012 Report Share Posted May 27, 2012 Yeah it's hard to read, don't worry you're not color blind Quote Link to comment Share on other sites More sharing options...
Hamstar99 Posted May 27, 2012 Report Share Posted May 27, 2012 Yes i had this problem. Even halved the sample and skirted half a bottle in to try and prove a point, still no colour change. Took it back and got a new bottle, which worked sweet. The GH test doesnt have as longer life as the KH tests. Mine had expired on the shelf in the pet store. Note the last couple numbers stamped on the bottle. That is the year it was made. You have 3 years after that before it expires. Quote Link to comment Share on other sites More sharing options...
amtiskaw Posted May 27, 2012 Author Report Share Posted May 27, 2012 That's good to know - I'll check the dates tonight. Cheers Quote Link to comment Share on other sites More sharing options...
amtiskaw Posted June 1, 2012 Author Report Share Posted June 1, 2012 Hah, checked mine and the year of manufacture was 09 :facepalm: Off to get a replacement tomorrow. Found some guides to longevity of API stuff here Quote Link to comment Share on other sites More sharing options...
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