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Unread 03/14/2010, 05:36 PM   #1
mrvicz
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Join Date: Jan 2007
Location: Philippines baby yeah!
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RO/DI concern... help with DI cartridges pls

hello,

I buy RO water from a refilling station and its logging 7-20 TDS on my Hannah TDS-1. Now Im planning on getting this from spectrapure :


I would feed the RO water I buy to that DI assembly for further filtration and deionization. I was to buy a booster pump but Russ from Buckeyefieldsupply suggested against running a booster pump on the cartridges and just gravity feed the water to the DI assembly (thanks for the suggestion Russ).

Now my question is, since I can only elevate the RO water container to about 3 feet, will the pressure be enough? Can I use a small pump instead to feed RO water to the DI assembly, say a 100gph maxijet 400?

Thanks a lot in advance!

Vic


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Current Project : 100gal Starphire All SPS

Last edited by mrvicz; 03/14/2010 at 05:48 PM.
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Unread 03/14/2010, 06:18 PM   #2
Nexenn
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Whats the barrier to you just buying your own RO/DI unit? You can get one for nearly that price and just make it at home without having to go buy it and then feed it through another unit.


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Unread 03/14/2010, 08:04 PM   #3
radicaltimes
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Listen to Russ. If you put to much volume thru the DI you won't be removing everything from the RO water


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Unread 03/14/2010, 08:10 PM   #4
Saltcity
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Gravity is gravity... Just ask John Mayor(sorry for the joke)
If you can get 3 feet above the input on the DI your good!

BUT, I'm with Nexenn, Just buy a complete RO/DI kit and then no more trips to get water, it will be right there!!


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Unread 03/15/2010, 02:05 AM   #5
mrvicz
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Location: Philippines baby yeah!
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thanks for the input guys.

whats keeping me from buying the whole RO/DI unit is that i only top off about 7.5gals weekly and then I use NSW for water changes. i live a good 10-15 minutes away from a beach which doesnt have any house nearby and there's a reef just at knee level from the shore. so i figured it'd be best to get my WC water directly from the reef instead of having to make/mix my own SW.

so its more practical for me to just buy RO water and then just run it thru the D2 to further filter it. besides it only costs around $0.2 to have 30 gallons delivered to my place and $0.65 for 5 gallons of RO water. further computation would lead to a ~$4 monthly cost for my top off.


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