I bought a ro/di unit for my tank. It has only been in use for 6 months. According to the manufacturer the filters only need to be replaced every 12 months. I just tested the water and the nitrates in the ro water are 20+ ppm. They used to be 0. Now they are the same as my tap water. What's going on? I decided to check the water after i noticed my hammer coral starting to recede and my 2 leather corals disappeared.
Any ideas why the filters would go bad so fast? Now I have to go buy 50 gallons of water to do a huge water change. I never thought to test the RO water I used to do a 50% water change 2 days ago. Now my tank is looking terrible. NOT what I planned to do on my day off. I did order the new filters (at 50.00) but they will not be here for up to 2 weeks (they are on back order of course)
I only test my tank water about every other week or less and it was always OK. I never thought the daily top off water was worse than what was in the tank. Geez.....when it rains it pours.
Any ideas or suggestions would be great. I'm off to buy water.
Angie