RO/DI is already out 100 gallons later? - Page 2

mitsu_matt · 03/09/2011, 08:23 AM

I am on my own with the water as I have well water. My TDS on my RO is 700 incoming and 50 outgoing. On my RO/DI its 7 outgoing (no way to measure after the membrane on the Vertex unit as its all packaged together with the TDS meter, microprocessor and back-flush thingy). Here is the unit: http://www.aquacave.com/vertex-purat...unit-2531.html

After reading more about this unit, maybe I should change to a 75gpd membrane and add a second DI chamber.

MelloW33 · 03/09/2011, 08:44 AM

I'd either find a way to run the water back through the system or just get one of those 2 canister DI add-on systems.

alanbates12 · 03/09/2011, 09:36 AM

I think Id take BuckeyeFS up on his offer to trouble shoot your unit...

The Velvet Sea · 03/09/2011, 11:27 AM

You're getting a 92.86% rejection rate from your membrane. 100 gpd membranes like yours will chew through DI resin when your tap TDS is high. Getting a 75gpd membrane with a 98% rejection rate or better will be a HUGE help for your problem. In your situation, with a 98% rejection rate, you will be sending approximately 14 tds water to your DI instead of 50 tds and your DI will last over 3 times as long (estimated).

mitsu_matt · 03/09/2011, 11:52 AM

Quote:

Originally Posted by The Velvet Sea

You're getting a 92.86% rejection rate from your membrane. 100 gpd membranes like yours will chew through DI resin when your tap TDS is high. Getting a 75gpd membrane with a 98% rejection rate or better will be a HUGE help for your problem. In your situation, with a 98% rejection rate, you will be sending approximately 14 tds water to your DI instead of 50 tds and your DI will last over 3 times as long (estimated).

Now thats info i like to hear! Guess i need to do some field testing now.

bamf25 · 03/09/2011, 01:40 PM

BUlk Reef Supply sells universal RO filters that are 75 gpd and 98% rejection and they are well priced.

03/09/2011, 08:23 AM	#26
mitsu_matt Registered Member Join Date: Jan 2011 Location: South Lyon, MI Posts: 62	I am on my own with the water as I have well water. My TDS on my RO is 700 incoming and 50 outgoing. On my RO/DI its 7 outgoing (no way to measure after the membrane on the Vertex unit as its all packaged together with the TDS meter, microprocessor and back-flush thingy). Here is the unit: http://www.aquacave.com/vertex-purat...unit-2531.html After reading more about this unit, maybe I should change to a 75gpd membrane and add a second DI chamber. __________________ MaTT Current Tank Info: 225g, 300lbs LR, 80g sump/fuge, Skimz Monster PS250, MP40 x 2, 24"Reefbreeders Full Spectrum X 3, PanWorld PS250 main pump, PVC hot water tank heating system, Vertex100gpd ro/di, ReefKeeper Elite net, Bubble Magnus dosing pump (Ca,Alk, Mg)

03/09/2011, 08:44 AM	#27
MelloW33 Registered Member Join Date: Sep 2010 Location: Indiana Posts: 591	I'd either find a way to run the water back through the system or just get one of those 2 canister DI add-on systems. __________________ Mark

03/09/2011, 11:27 AM	#29
The Velvet Sea Registered Member Join Date: Oct 2006 Posts: 450	You're getting a 92.86% rejection rate from your membrane. 100 gpd membranes like yours will chew through DI resin when your tap TDS is high. Getting a 75gpd membrane with a 98% rejection rate or better will be a HUGE help for your problem. In your situation, with a 98% rejection rate, you will be sending approximately 14 tds water to your DI instead of 50 tds and your DI will last over 3 times as long (estimated). __________________ Current Tank: 75 gallon mixed reef

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03/09/2011, 09:36 AM	#28
alanbates12 Registered Member. Join Date: Nov 2010 Location: Alabama Posts: 900	I think Id take BuckeyeFS up on his offer to trouble shoot your unit...

03/09/2011, 01:40 PM	#31
bamf25 Registered Member Join Date: Dec 2010 Location: Central NJ Posts: 1,419	BUlk Reef Supply sells universal RO filters that are 75 gpd and 98% rejection and they are well priced.