No, you can't bring it down. It will probably be better once you have a demand for it. This is one of the reasons I switched away from IO which is 11 dKH out of the bucket. When I'm trying to keep 7-8 dKH a water change with 11 dKH can make quite a shift. I switched to H2Ocean and am happier that the alk is about 8.75 dKH (Elos) out of the bucket (first bucket I have tested...haven't double checked my numbers yet). I'm stoked I don't have to dose calcium, alkalinity, or magnesium with the H2Ocean, but the potassium is just as low as IO at ~250 ppm.

I have 2 relatively new Elos KH test kits (correct instructions) that give me different readings. Both are supposed to be identical kits but one will read 8.5 while the other will read 7-7.5. It appears that the reagent is the same in both kits but the droppers are clearly different and one produces visibly larger drops, thus needing fewer drops to change colour and giving me a lower reading.

I don't know which one is accurate since I don't feel like going out and buying a third kh test kit so i've just been testing twice and splitting the difference.

Anybody else ever have Elos inconsistencies?