Hi All, I run my 125l aquarium on remineralised RO Water and I have hengels rasbora and Amano shrimp. My LFS has closed completely and I've got enough water for one 10% water change plus top-ups. If we are only going to be in this situation for 3 weeks, I might just manage, but any longer and things could get difficult. I've been considering my options and here's what I've concluded: 1 - Softening 'pillows'. The main drawback with these appears to be that they can increase the salt in your water. 2 - Buy water online (it needs to be delivered to my door). 3 - Buy an RO Unit. This would be the obvious solution, except I don't have space in an easily accessible area to hook it up. Would a drinking water filter system suffice? 4. Small water changes with tap water or 10% with a 50/50 mix of tap/RO. My tap GH is very near the limit my fish can stand, and incorrect water hardness was the reason I lost fish when I was a 'newbie', so obviously I'm reluctant to go there (also my tap water frequently smells like chemicals, but I always keep tap water conditioner on hand). I also wondered of there an additive which is the opposite of remineraliser and allows you to soften water by a specific amount. My aquarium parameters are as follows: Tank: Gh - 9 Kh - 4 Ph - 7.5 Ammonia - 0 Nitrite - 0 Nitrate - 20+ (still in safe zone according to my test kit, but definitely less than 30). Tap: Gh - 13-14 (I'd say 13.5) Kh - 12 Ph - 7.5 Ammonia - 0 Nitrite - 0 Nitrate - 5 max Any advice gratefully recived!