How often do you replace RO unit?

euphylius · 04/16/2006, 12:29 PM

After 2,5 years I am having more and more troubles with cyanos. I am asking all old reefers, how often do you replace RO unit? Did you notice any changes after RO unit replacement?

Regards.

RobbyG · 04/16/2006, 01:41 PM

Why would you want to replace the whole unit? Why not replace the Individual filters? You should get a TDS meter and see whats wrong before you replace the whole unit.

euphylius · 04/17/2006, 01:38 AM

Do you maybe know normal or average level for a new RO or RO/DI unit?

mburnickas · 04/17/2006, 08:02 AM

New should be zero.

replace RO when they start to go up. Mine is almost 2 years old and it has a TDS of 6ppm. when it hits 10, bye bye RO.

Get a TDS meter; cost is about $25.

My DI is keeping TDS at zero.

euphylius · 04/17/2006, 08:20 AM

I checked my RO with Salifert kh test, results is 2 drops (0,4 kh), suposse that is triple much, a?

blmeier7 · 04/17/2006, 10:45 AM

Here are a couple of links to get you started. They also sell the TDS meters to help you check your water and see if your membrane needs replacing. The kH test is not going to give you the results you are looking for.

www.thefilterguys.biz/index.htm

www.airwaterice.com

smleee · 04/17/2006, 10:56 AM

Prefilters should be replaced every 6 months regardless of use. The membrane or DI should be replaced when your TDS meter tells you they are not efficiently working anymore.

eee

Reefmaniac1 · 04/17/2006, 11:01 AM

It also helps if you get DI resins that change colors as they are used up. When you have something to eyeball, it can make a huge difference.

euphylius · 04/17/2006, 11:35 AM

Thank you. I must ask them, if they deliver to Europe. We ususally use only RO units.

04/16/2006, 12:29 PM	#1
euphylius Registered Member Join Date: Oct 2004 Location: Slovenia Posts: 103	How often do you replace RO unit? After 2,5 years I am having more and more troubles with cyanos. I am asking all old reefers, how often do you replace RO unit? Did you notice any changes after RO unit replacement? Regards.

04/16/2006, 01:41 PM	#2
RobbyG Registered Member Join Date: Jun 2005 Location: 600 Ft From the Reef Posts: 2,099	Why would you want to replace the whole unit? Why not replace the Individual filters? You should get a TDS meter and see whats wrong before you replace the whole unit. __________________ The Optimist says the glass is half full, the Pessimist says it’s half empty, an engineer only see's a glass that’s twice as big as it needs to be! Current Tank Info: Insanely Automated Low Power Consumption 90 Gal Oceanic Bow System/Aquatronica Touch Controller/AQ Dosing Pump/AQT LEDS/AQ SMS/Seq Dart Pump/ASM G3/Ozotech Ozonizer/Koralin 1502/Chiller/Typhoon3 Ro/S.Squirt /Phos React/Rmt DSB

04/17/2006, 01:38 AM	#3
euphylius Registered Member Join Date: Oct 2004 Location: Slovenia Posts: 103	Do you maybe know normal or average level for a new RO or RO/DI unit? __________________ ..to many crooks will make your soup to salty..

04/17/2006, 08:02 AM	#4
mburnickas Registered Member Join Date: Feb 2004 Location: MA Posts: 684	New should be zero. replace RO when they start to go up. Mine is almost 2 years old and it has a TDS of 6ppm. when it hits 10, bye bye RO. Get a TDS meter; cost is about $25. My DI is keeping TDS at zero. __________________ Thanks Mike Current Tank Info: 75 gal; Tek T5 lights, reef tank with low to mod coral; wavemaker with maxjet ph; red sea ozone with orp at 350 (and going higher); Ev-120 protein skimmer; quiet one 3000 main pump

04/17/2006, 08:20 AM	#5
euphylius Registered Member Join Date: Oct 2004 Location: Slovenia Posts: 103	I checked my RO with Salifert kh test, results is 2 drops (0,4 kh), suposse that is triple much, a? __________________ ..to many crooks will make your soup to salty..

04/17/2006, 10:45 AM	#6
blmeier7 Registered Member Join Date: Feb 2005 Location: Amarillo, TX Posts: 433	Here are a couple of links to get you started. They also sell the TDS meters to help you check your water and see if your membrane needs replacing. The kH test is not going to give you the results you are looking for. www.thefilterguys.biz/index.htm www.airwaterice.com

04/17/2006, 10:56 AM	#7
smleee Registered Member Join Date: May 2004 Location: Boise, ID Posts: 1,344	Prefilters should be replaced every 6 months regardless of use. The membrane or DI should be replaced when your TDS meter tells you they are not efficiently working anymore. eee

04/17/2006, 11:01 AM	#8
Reefmaniac1 Registered Member Join Date: Feb 2004 Location: Durham, NC Posts: 2,580	It also helps if you get DI resins that change colors as they are used up. When you have something to eyeball, it can make a huge difference. __________________ "Stupidity is not necessarily punishable by violence. Although, there are days when I wish it were." - Solomon Short Current Tank Info: None due to disaster...and moving.

04/17/2006, 11:35 AM	#9
euphylius Registered Member Join Date: Oct 2004 Location: Slovenia Posts: 103	Thank you. I must ask them, if they deliver to Europe. We ususally use only RO units. __________________ ..to many crooks will make your soup to salty..