After about a week it started to bubble properly and skim really well, but I did a water change again to test the chemical in the water conditioner theory and it has been confirmed. I'm going to switch to ro
water for my next water change. They sent me a pump replacement, but I'm hesitant to put it on... Out of the box it was scuffed up and looked used. If it functions properly then it's fine, but I also want to wait until my water is clean of the water conditioner before I attach the replacement. I don't want the replacement to have the same problem because of the water. I'm thinking of switching pumps once I do the water change with ro
Is there any way to test the pumps to find out if one is better than the other?
I don't really trust the replacement they reluctantly sent me...