Top off water

TitanTV · 02/28/2011, 07:54 PM

I have went from a 70 gallon main tank to a 300. I used to have a small tupperware that would do for top off for serveral days. I now have a 20 gallon tank for RODI water. Do I need to worry about the water going stagnate on me? Is there anything I should do to keep the water good?

votek · 02/28/2011, 08:03 PM

yes, but it will get oxygenated once it re-enters the system

allsps40 · 02/28/2011, 08:12 PM

You should be fine. I think you will find that 20 gallon of top off will go fast in that large of a tank. If you want you can run a small power head or an air stone to keep the water moving and O2 rich.

TitanTV · 03/01/2011, 08:59 AM

Much thanks for the advice

Acrotrdco · 03/02/2011, 12:46 AM

If you're using an ATO system, RO/DI water is fed into your sump very slowly, and I wouldn't worry about it getting stagnate.

Besides, I think a 300g would be evaporating at least 5g of water a day, your 20g RO/DI reserve will run out in less than a week.

Bloodritual · 03/02/2011, 12:59 AM

I have a 10 gallon tank for my ATO reservoir that pretty much gets empty in less than 2 weeks, and my main tank is only 70 gal. I would think that yours will have to be refilled at least once a week or so. I don't think that would be enough for it to become stagnant.

Hemlock71 · 03/02/2011, 01:06 AM

I go through 20 gallons a week at least on a 150g system.

jdieck · 03/02/2011, 02:03 AM

Because RO/DI has been stripped from desinfectants there is always the posibility of getting it contaminated with spores or bacteria but you should not have a problem aver a week or so period but in any case keep the reservoir ell covered and if possible in a dark area or use a reservoir that is not translucent or transparent.

paraphish · 03/03/2011, 01:07 PM

Shouldn't be a problem. My top off water sits for up to two weeks and I have never had any issues with it.

02/28/2011, 07:54 PM	#1
TitanTV Registered Member Join Date: Sep 2009 Location: Virginia Posts: 368	Top off water I have went from a 70 gallon main tank to a 300. I used to have a small tupperware that would do for top off for serveral days. I now have a 20 gallon tank for RODI water. Do I need to worry about the water going stagnate on me? Is there anything I should do to keep the water good?

02/28/2011, 08:12 PM	#3
allsps40 Registered Member Join Date: Aug 2010 Location: Arizona Posts: 4,627	You should be fine. I think you will find that 20 gallon of top off will go fast in that large of a tank. If you want you can run a small power head or an air stone to keep the water moving and O2 rich. __________________ __________ Current Tank Info: Past reef tanks: 20H softy, 29G mixed reef, 55G mixed reef, 40B sps dominant mixed reef and 75G sps dominant mixed reef. No tank currently

03/02/2011, 02:03 AM	#8
jdieck Registered Member Join Date: Dec 2002 Location: Maumee, OH Posts: 15,673	Because RO/DI has been stripped from desinfectants there is always the posibility of getting it contaminated with spores or bacteria but you should not have a problem aver a week or so period but in any case keep the reservoir ell covered and if possible in a dark area or use a reservoir that is not translucent or transparent. __________________ Did I write what I wrote? What the heck am I talking about! Well..... Nevermind. Current Tank Info: 225 gal reef, DSB, 40 g sump w/ LRT100 return, 37 g pre-sump, 3 MH 250 W 15K, 4 96 W PC dual actinic,ETS 1500 Skim.w/LRT70, 20 lb Ca R., 40 W UV, 1/3 HP chiller, two 350 W Htrs, Neptune II Cont., 330 P LR/ 330 P LS. 55 gal Refugium

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02/28/2011, 08:03 PM	#2
votek Registered Member Join Date: Apr 2003 Location: Rochester, New York Posts: 597	yes, but it will get oxygenated once it re-enters the system

03/01/2011, 08:59 AM	#4
TitanTV Registered Member Join Date: Sep 2009 Location: Virginia Posts: 368	Much thanks for the advice

03/02/2011, 12:46 AM	#5
Acrotrdco Moved On Join Date: Jul 2010 Posts: 708	If you're using an ATO system, RO/DI water is fed into your sump very slowly, and I wouldn't worry about it getting stagnate. Besides, I think a 300g would be evaporating at least 5g of water a day, your 20g RO/DI reserve will run out in less than a week.

03/02/2011, 12:59 AM	#6
Bloodritual Registered Member Join Date: Mar 2010 Posts: 82	I have a 10 gallon tank for my ATO reservoir that pretty much gets empty in less than 2 weeks, and my main tank is only 70 gal. I would think that yours will have to be refilled at least once a week or so. I don't think that would be enough for it to become stagnant.

03/02/2011, 01:06 AM	#7
Hemlock71 Registered Member Join Date: Nov 2008 Location: New Jersey Posts: 147	I go through 20 gallons a week at least on a 150g system.

03/03/2011, 01:07 PM	#9
paraphish Registered Member Join Date: Mar 2010 Location: Ft. Wayne, IN Posts: 52	Shouldn't be a problem. My top off water sits for up to two weeks and I have never had any issues with it.