libertybelle
Aquarium Advice Addict
Wow they must be really old test strips or they had gotten damp or something. (You should tell them that, btw, they may not actually know their strips are not working at all.) Test strips can be inaccurate but they shouldn’t say water of those parameters is fine. There are ammonia test strips too. My lfs tests samples with both and they might be a little off from time to time but they’re usually in the ballpark.
Technically KH is carbonate hardness which should be unaffected by the neutral regulator which is a phosphate based buffer (this is according to a seachem rep) however my understanding is that what these KH kits usually actually measure is just the simple resistance to ph swings which would be effected by both phosphate based (neutral regulator) and carbonate based (acid and alkaline buffer) systems.
I don’t think either should effect gh though which as I understand it is specifically measuring mg/ca in the water. So this shift does suggest something in your tap has changed. (Or you are adding something else?)
Technically KH is carbonate hardness which should be unaffected by the neutral regulator which is a phosphate based buffer (this is according to a seachem rep) however my understanding is that what these KH kits usually actually measure is just the simple resistance to ph swings which would be effected by both phosphate based (neutral regulator) and carbonate based (acid and alkaline buffer) systems.
I don’t think either should effect gh though which as I understand it is specifically measuring mg/ca in the water. So this shift does suggest something in your tap has changed. (Or you are adding something else?)