R/O units

[Bartman]

Originally Posted by DanG

BAD!!! No, that's a really easy way to kill your membrane. From what I've read, you can get 25 feet of the same tubing that connects from the water source to the in of the filter, coil it up and submerse it in a bucket that has a small heater in it keeping the water @ 78°f. That will help boost your production.

Just curious, why would warm tap water kill your membrane but warmed water through a coil would not?

[mr_alberta]

I think Dan is implying that there is more room for error (i.e. accidentally running only hot water to the unit) when hooking it up to the hot water line and killing your membrane.

[Jason McK]

you may also want to check the PSI the unit requires.

Also double check your connections and filters.

J

[sergeantpilot]

I've got a fairly new 100 gpd unit from Aquasafe and all I get is 30-35 gpd. Took forever to fill my tank initially. The 100 gpd is a myth to sell the unit IMO, unless someone else out there has made the unit go into top gear, I would like to know how. Just my 2 cents worth.

[Willow]

i have an older marine depot 4 stage unit. it can fill my 30 gallon brute can in around 5-6 hours. when the carbon prefilter is shot it takes around a week to fill the container.

[Paverdude]

My r/o unit has a small pump w/ pressure switch bumps it up to 125psi.

[Dad]

The manufacturer doesn't tell you what temperture you should have but does say you need at least 45psi. I did put some of the hose in my sump to help warm up the water and it did help, last night in 8hrs I got 12gals which equals out to 36gpd, thats up from 17hrs and 11gals. Tomorrow I will post temperature & TDS going into R/O and temperture & TDS coming out of unit.

[Bartman]

Originally Posted by mr_alberta

I think Dan is implying that there is more room for error (i.e. accidentally running only hot water to the unit) when hooking it up to the hot water line and killing your membrane.

I am just waiting to receive my Aquasafe unit and I ordered a faucet adapter. I understand that RO membrane capacity is rated at somewhere around 75F, not cold water temps. I was planning on running with the same temp water I use for my FW tanks (around 74F). Is this safe?

[vanreefer]

Originally Posted by Bartman

Just curious, why would warm tap water kill your membrane but warmed water through a coil would not?

the warm water from the tap (hot water heater) could (usually does) contain heavy metals that leach out of the tank. I use warm water from the tap makes a huge difference in RODI water production