- Joined
- May 27, 2020
- Messages
- 17
- Reaction score
- 2
- What state or country do you live in
- United Kingdom
Hi, two weeks ago I used a new RO unit to fill my aquarium, then switched it off, today I wanted to use it again to do a water change and noticed the resin filter has gone from looking like the one in the online picture (new) to the way mine looks now, is this normal? It’s gone extremely dark and mushy when before it was solid as the water passed through it and bright.



