Hanna instruments are usually good quality.
Billigaste Hanna tds mätaren som jag hittade.
Add Sera Mineral Salt to my list 
I forgot about that.
Thankyou both for your help. I am going to shop around and let you know what I end up buying. This aquarium hobby is getting expensive!
Thanks
Karen
Vad får du för värde ? Här ligger det på 170-175…är det för lågt ?!?
Jag har 68 ppm i kranen men jag tror inte att det räcker med att slänga i GH+ till 200ppm. Förmodligen är det något i vattnet som jävlas iallafall därför köpte jag osmos-anläggningen.
Anläggningen kom idag, filtret verkar fungera som det ska, men har inte testat ut-vattnet än.
Dock så läcker anslutningen till kranen, inte så att det inte går att använda filtret, men ändå, jag hoppas att jag orkar reklamera den detaljen.
Patronerna är märkta med max 3,5 bar, det sitter en tryckmätare på profi-modellen, som jag köpte, 3,5 bar motsvarar inte mycket påvrid på kranen. Köper ni utan mätare kan det vara idé att vara försiktiga på den punkten.
You mean the connection between the kran and the anläggning ? Mine was dripping first as well, I had to adjust the o-ring several times until it was waterproof.
Thanks for the answer, but it’s the valve on that connection that leaks, I haven’t tried to disassemble it. Everything else works great.
Aaaah my parcel containing my osmosfilter has gone missing! DHL are saying it was delivered today which it most definately has not. Was left with a neighbour who does not exist. They dont reply to emails either. Osmose-billiger have been helpful getting in contact with DHL for me and being quick to reply to my panic email! I always thought of DHL as a reputable company but now Ive read loads of horrible complaints online. I smell a huge thieving rat. 
I just hope I can get my money back if I dont get my filter.
Karen
That sucks. Talk to DHL, they can sort it out (hopefully). But it is good that you give feedback here. That way we can see if others have problems too.
Phew after spending a huge part of yesterday making phone calls my package arrived today The swedish post cannot explain why my delivery was listed as being delivered to somebody else. Strange but I am happy that I got my osmosfiler now and I even got a free upgrade. The osmose-billiger company were very helpful but not very good at english so be warned…you might have to ring a good few times to get someone you can talk with…ask for Dominic if you can he was the best.
thankyou from a very relieved Karen