Can i use my House RO/DI for Reef Tank?

bfb · 10/22/2012, 07:33 AM

Hi All,

I have a 5 Stage RO/DI system in my house, its a regular one i bought for cooking.

Can i use it for my Reef Tank?

cobra9 · 10/22/2012, 10:57 AM

Whats the TDS of your tap water and whats the TDS coming out of your house RO/DI?

If your TDS is good I don't see why your couldn't use it.

Fishbulb2 · 10/22/2012, 11:24 AM

I agree exactly with cobra. It's really all about the rejection rate of the membrane. For cooking, you might not care if it's 94-96% rejection. You might not even check it regularly. However, the difference between that and a 98+% rejection membrane will make a very big difference when it comes to your DI usage. I would recommend you test your membrane's rejection rate and then either just add DI, or just replace the membrane if the rejection rate is low. Either way, it will be cheaper than buying a whole new unit and maintaining two separate RO units.

FB

jackde · 10/22/2012, 01:31 PM

Being it's a house unit are you sure it has a DI stage?

Dapg8gt · 10/22/2012, 01:40 PM

Quote:

Originally Posted by jackde

Being it's a house unit are you sure it has a DI stage?

^^ this. Most house units are only RO as there is mixed reviews on drinking DI water.

cephalotus · 10/22/2012, 01:45 PM

DI water is generaly considered unsafe to drink so I would assume your unit is RO without a DI stage. This being said I have used non DI RO water in my reef for years

Kabuto · 10/22/2012, 07:56 PM

If it has a tank, you shouldn't feed water from the tank through the DI. My RO has a tank. The TDS out bypassing the tank is ~5 (400+ in). The TDS from the RO water out of the tank is about 100 as it picks up stuff in the tank.

10/22/2012, 07:33 AM	#1
bfb Registered Member Join Date: Oct 2012 Location: Bahrain Posts: 19	Can i use my House RO/DI for Reef Tank? Hi All, I have a 5 Stage RO/DI system in my house, its a regular one i bought for cooking. Can i use it for my Reef Tank?

10/22/2012, 11:24 AM	#3
Fishbulb2 Registered Member Join Date: Mar 2006 Location: Bethesda, MD Posts: 1,807	I agree exactly with cobra. It's really all about the rejection rate of the membrane. For cooking, you might not care if it's 94-96% rejection. You might not even check it regularly. However, the difference between that and a 98+% rejection membrane will make a very big difference when it comes to your DI usage. I would recommend you test your membrane's rejection rate and then either just add DI, or just replace the membrane if the rejection rate is low. Either way, it will be cheaper than buying a whole new unit and maintaining two separate RO units. FB __________________ Just getting back in, but trying to do it right! Current Tank Info: 40 gallon tank. SPS, LPS, few softies

10/22/2012, 01:31 PM	#4
jackde Old dog and new tricks Join Date: Sep 2011 Location: Northern IN Posts: 328	Being it's a house unit are you sure it has a DI stage? __________________ Dumber than a box of base rock Current Tank Info: 56 gal. mixed reef

10/22/2012, 10:57 AM	#2
cobra9 Registered Member Join Date: May 2010 Posts: 700	Whats the TDS of your tap water and whats the TDS coming out of your house RO/DI? If your TDS is good I don't see why your couldn't use it.

10/22/2012, 01:45 PM	#6
cephalotus Registered Member Join Date: Mar 2010 Location: Michigan Posts: 123	DI water is generaly considered unsafe to drink so I would assume your unit is RO without a DI stage. This being said I have used non DI RO water in my reef for years

10/22/2012, 07:56 PM	#7
Kabuto Registered Member Join Date: Sep 2004 Location: Phoenix AZ Posts: 133	If it has a tank, you shouldn't feed water from the tank through the DI. My RO has a tank. The TDS out bypassing the tank is ~5 (400+ in). The TDS from the RO water out of the tank is about 100 as it picks up stuff in the tank.