How do I pick RODI?

[estevenson78]

Hello my salty family! My friend and I have been getting back into the saltwater aquarium scene here at work and we are wanting to look into a RODI system. That being said, how do we know what to pick? I have 14, 24 and 29 gal bio/nano cubes. My friend has 40 gal breeder with fuge underneath. I see there are different stage options available. Can y'all give your expertise to help us know our direction to go?

Oh also,

• My 14 will be for 2 percula clown and an anemonae
• My 29 will be for cinnamon clown, carpenter fairy wrasse and maybe a few coral
• My 24 will be for coral only
• My friends 40 will be a fish and coral tank

Not sure if that affects what level of filtration we want?

Thanks again in advance!

Eric

 

[Derek siskey]

Only thing that matters on the small tanks is how many days it will take to fill all of them up depending on the size of your storage containers, I have a 75gpd with a 32 gallon storage because doing 10% water changes a week isn’t going to require me to get anything bigger than the minimum. If it helps any you can always spend the money and get enough water from your Los to fill the tanks and then just worry about doing your water changes with the ro/di unit.

 

[TARHEEL78]

I would think stages would depend on your water quality and what it takes to get to 0 TDS.

 

[Opus]

Looks like your water district uses chloramines. You will most likely want to invest in a RO unit that comes with a special carbon pre filter made to take out chloramines (vs chlorine). You can buy one of the cheaper units and buy the chloramines carbon filter block and replace the one that comes with the RO unit but not sure that will save much money if any vs buying a RO unit that comes with the chloramines carbon filter block.

Most people can get buy with a 4 stage unit. This will be a sediment filter, then carbon filter (either normal or one made for chloramines), RO membrane and then DI. You will also want to buy a tds meter. I personally prefer the handheld ones since they compensate for temperature. They can be bought for around $20.

Best places to buy are one of the sponsors here. Buckeye, spectrapure or BRS. Personally, I have a 25 year old unit that I'm currently using spectrapure filters in.