Large RO Unit

[Aquattro]

Originally Posted by Jaws

It's this unit here: http://aquariumwaterfilters.com/shop...category_id=28

There's a good used one here locally with a new membrane for a really good price so I've been trying to decide if it's worth it or not. I just figured its always nice to have something like that on hand in case you need an emergency water change, etc.

Well, for the price, if you have money to part with, it's a pretty good deal. If the membrane is really new (I don't think it is), it might be worth it to pick up.

[Jaws]

I was told its only 2 months old and that a certain someone got in trouble for changing it when the place was closing.

[sphelps]

Sounds like overkill to me. Not sure how much water you'll loose in evaporation but I have a hard time imagining your water consumption will be more than 100 gallons a week including the biweekly changes. Worst case you can make that much water is two days if you only get half your rated output from the current unit. Might be better just buying another 100GPD unit to run in parallel for redundancy which will also double your output and won't effect cost long term since you'll double your filter life. Also a 200 gallon storage tank would be a good investment as well so you can simply maintain that much water on hand.

On the other hand you could potentially fill your tank in one day with that unit

[Jaws]

Originally Posted by sphelps

On the other hand you could potentially fill your tank in one day with that unit

Exactly! I've always preferred the Tim The Tool Man approach. lol

[mike31154]

The 1:1 ratio of waste water is a useful feature.

[lastlight]

Originally Posted by mike31154

The 1:1 ratio of waste water is a useful feature.

I'm familiar with reducing that ratio with multiple membranes (feeding waste into another) but how is this achieved with a single membrane? Can this be done with any membrane?

I know if I manually adjust my ratio with the restrictor my output TDS goes up.

[Jaws]

Originally Posted by lastlight

I'm familiar with reducing that ratio with multiple membranes (feeding waste into another) but how is this achieved with a single membrane? Can this be done with any membrane?

I know if I manually adjust my ratio with the restrictor my output TDS goes up.

That seems to be the ratio for all the Aqua FX models I believe.

[Aquattro]

Originally Posted by Jaws

I was told its only 2 months old and that a certain someone got in trouble for changing it when the place was closing.

Ah, ok then