R.O.Questions

[digger123]

Is it bad to only use ro water when you do water changes? I have a 200+ gallon tank. I have a 55 gallon tank that my ro fills, then when its full i change the big tank. All the fish are doing great, just wondering if its bad to do. My tap water is bad.

 

[bmthomps84]

Pretty sure it's great for the fish, but can be harmful to your plants because it removes many trace minerals they need to thrive. There are a bunch of additives you can purchase to supplement the water though.

 

[digger123]

No plants. Thanks for the input.

 

[Noto]

RO water only is not a good idea; your water will have very low buffering capacity and TDS. Better to reconstitute the water with additives, as BMThomps84 mentioned.

 

[loach43]

Many just use a 50/50 mix of tap and ro. If your tap water isn't in the 'terrible' range you can do that. Is your tap from a privately owned well or municipal water?