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Old 07-02-2013, 08:09 AM   #1
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Can i top up by too much in one go??

I top up with ro water once a week and its usually aout 25 litres in one go. And I have a 600 litre aquarium should i top up more regularity or is this ok
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Old 07-02-2013, 09:53 AM   #2
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Safer to top off small amounts of ro for there's no swing in salinity. Maybe try twice a week instead if once a week.
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Old 07-02-2013, 10:49 AM   #3
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I would do it daily. Get an auto top off. put a container of water in the stand and let it top off whenever necessary. Then fill the top off container once a week.
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Old 07-02-2013, 10:50 AM   #4
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How do I figure out the daily amount though?
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Old 07-02-2013, 10:52 AM   #5
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How do you figure the weekly amount? Don't you fill the tank until it's full?
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Old 07-02-2013, 10:53 AM   #6
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It's my sump levels that lower rather than my tank levels. Only time I know it's really low is when bubbles flow into the tank?
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Old 07-02-2013, 11:06 AM   #7
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That's late...so, basically you let the return pump start sucking air before you top off? I would draw a low and high line on the glass of the sump and look in there every so often. I would not let the pump run out of water. If you buy an auto top off, you can put the float switch at a certain height and it will turn the pump on every time it goes below that height.
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Old 07-02-2013, 11:08 AM   #8
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I just don't think I'll be able to fit a barrel inside my sump and I can't get to the back or side of my tank it's fitted into an alcove.

But i will definitly draw on high and low lines.
Do the bubbles do any damage to anything? Other than salinity lowering?
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Old 07-02-2013, 11:09 AM   #9
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Well, running the pump out of water could be damaging to the pump itself.
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Old 07-02-2013, 11:14 AM   #10
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Yeah. I just have a frog spawn coral and a hammer corals and it looks like something is biting them. And was just making sure it wasn't the bubbles in the water affecting them.

I tried everything to find the cause of this problem and really have come to an end.
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