Not sure if water filter will be good enough

[rikkis]

Hey, will the water filter under my sink be good enough for my aquarium? It has 3 stages and they say, sediment, prefilter, and carbon. It is attached to both the sink and also a separate facet next to it. It also has a chlorine reduction and odor reduction tube at the top. Its made by omnipure. We just rented a new house and happened to have this. Ive been buying water since the tank was first set up but im looking to get an R/O unit

it looks almost exactly like this on the right of the photo

 

[ezy33]

If you have phosphates in the filtered water I would add a DI filter to the system. It will save a algae battle later on.

 

[Kurt_Nelson]

It appears the picture you've linked to is an RO/DI system. But what you describe is just a water filter system (sediment/prefilter/carbon) and NOT an RO/DI system. A plain 3-stage filter system like you describe will just knock out chlorine, and the big chunks floating in the water, but that's about it. Nitrates, phosphates, heavy metals, etc will pretty much pass through unchecked.

 

[Jaybird]

It looks like an RO/DI system. Most of the home water filters lack the fourth stage.

If the system came with the house, chances are that it hasn't had it's filters changed in a long time. Check the filters and if one is totally orange, or an orange with green, that's likely the DI filter with gel.

Still, RO water is better than straight-up tap water.