Help: Aging RO/DI Water Faster - The Planted Tank Forum
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post #1 of 5 (permalink) Old 10-17-2015, 04:11 PM Thread Starter
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Help: Aging RO/DI Water Faster

I've been making RO/DI water with GH Booster and Potassium Bicarbonate; it takes 24 hours for the pH to stabilize at 7.3 - I've been doing this for months.

I wondered one day if it's the water or something to do with the bicarb. Well, I aged the water 24 hours then added the booster and bicarb and the pH stabilized right away.

I don't know what waiting on the RO/DI is. CO2, O2, degas, act of God.

Sooo... is there a way to rapidly age the water or do I need to continue waiting 24 hours? And why?

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post #2 of 5 (permalink) Old 10-17-2015, 04:58 PM
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Add a fountain pump to the bucket or garbage can. Put it at the bottom, and aim the discharge vertically. This way the water at the bottom will hit the surface and sheet across the surface (exposed to the air) then down. There ought to be some pretty serious ripples at the surface.

I can have the water ready in just half an hour. I have a different, but related problem:
Tap water holds too much air, and needs to off gas before I can use it in the tanks. By exposing all the water to the air the level of gases in the water will reach equilibrium with the air sooner.

Garbage can: 200-300 gph fountain pump.
5 gallon bucket: 'Table top fountain' or up to 100 gph is fine.

You can add the minerals at the beginning.
You can add an aquarium heater to warm the water. I hang it, suspended where it won't touch the sides, or else lay it on the floor of the can, on a couple of stones. Better water circulation around it will warm the water faster and more evenly.
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post #3 of 5 (permalink) Old 10-17-2015, 05:33 PM Thread Starter
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Quote:
Originally Posted by Diana View Post
Add a fountain pump to the bucket or garbage can. Put it at the bottom, and aim the discharge vertically. This way the water at the bottom will hit the surface and sheet across the surface (exposed to the air) then down. There ought to be some pretty serious ripples at the surface.

I can have the water ready in just half an hour. I have a different, but related problem:
Tap water holds too much air, and needs to off gas before I can use it in the tanks. By exposing all the water to the air the level of gases in the water will reach equilibrium with the air sooner.

Garbage can: 200-300 gph fountain pump.
5 gallon bucket: 'Table top fountain' or up to 100 gph is fine.

You can add the minerals at the beginning.
You can add an aquarium heater to warm the water. I hang it, suspended where it won't touch the sides, or else lay it on the floor of the can, on a couple of stones. Better water circulation around it will warm the water faster and more evenly.

I have a 1600 GPH Aquarium Reef Powerhead. It used to point across the barrel, but I changed it so it points straight up. The heaters total 450watts and are on a Finnex controller (works well). I also have a float switch that shuts everything off. I burnt a nice big hole through the bottom once after a power failure reset my GFCI breaker to ON and the barrel was empty. I'm glad I was home.


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post #4 of 5 (permalink) Old 10-17-2015, 06:47 PM
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I have a similar setup. Have a 30g barrel that gets filled up as soon as I'm done with my water change. The water sits in the barrel full all week. The night before I add the pond pump, the heater, and all the required additives and that basically just circulates in the barrel over night until I'm ready to do the water change the next day. Never had a problem getting the pH to stabilize.
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post #5 of 5 (permalink) Old 10-18-2015, 09:32 PM
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Ditto, a $15 pond pump and just chuck it into the garbage can.

I also don't think it is worth worrying overly much about reaching equilibrium. Just adding it to the tank and mixing with the existing water is going to do a lot of aeration on its own, not to mention dilution - that act will itself "finish" the aging, in a sense. I do not mean to imply no mixing is needed, just that 24 hours may be more conservative than you need be. I usually wait 2-3 hours with a pond pump running.

Linwood

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