Water change - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 7 Old 04-27-2012, 04:53 PM Thread Starter
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Water change

I know this is a crazy question but I want to be clear. When I do water changes using Tetra safe do I add the product to the water BEFORE I fill the tank back up OR do I do the water change and add the product. I have a 35gallon tank. Thanks!
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post #2 of 7 Old 04-27-2012, 04:59 PM
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I would say treat the water in the bucket before adding it to the tank, as if the chlorinated water hits the filter media it could/will kill off the beneficial bacteria that lives there. not worth the risk.

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post #3 of 7 Old 04-27-2012, 05:02 PM Thread Starter
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Thanks I figured that would be the best thing to do.
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post #4 of 7 Old 04-27-2012, 07:46 PM
The safest, best way is to condition water with the appropriate amount of conditioner before it goes into the tank.
Having 'said' that, many people here that use a Python or similar hose device for water changes report that they add the appropriate amount* of conditioner to the tank, then fill with the hose.
* The wrinkle is in the 'appropriate amount' - some use an amount for the whole tank, while others just use the amount sufficient for the new water being added.

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post #5 of 7 Old 04-27-2012, 07:50 PM
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I have sumps on my 75g and 180g tank and I add the conditioner to that before filling the tank, then I turn the pump on so it mixes before going direct to the tank.

10g Fry / Hospital / QT tank (as needed)

75g Saltwater Reef, Ocellaris Clownfish, Lyretail Antias (baby), Lemon damsel, Longtail Fairy Wrasse, purple dottyback, snails, crabs and a few LPS corals.

220g Still sitting empty (come on Lottery I need the numbers to come up!)
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post #6 of 7 Old 04-27-2012, 08:04 PM Thread Starter
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I have a siphon hose that I am using to take out about 25% of the water into a 5 gallon bucket. Then I thought how the heck will I know how many liters/gallons I'm putting back in so that I can treat the water accordingly. But I'm def gonna get it straight before Wednesday! Scheduled water change. I know with experience I can just KNOW but for now I'm going to rely on these instruments lol
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post #7 of 7 Old 04-27-2012, 09:33 PM
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Originally Posted by tdOtjunior View Post
I have a siphon hose that I am using to take out about 25% of the water into a 5 gallon bucket. Then I thought how the heck will I know how many liters/gallons I'm putting back in so that I can treat the water accordingly. But I'm def gonna get it straight before Wednesday! Scheduled water change. I know with experience I can just KNOW but for now I'm going to rely on these instruments lol
Well 25% of a 35g tank is 8.75g, so we could most easily round this to 10, so fill your 5g bucket twice, then fill with tap water at tank water temperature (76-78F), treat with conditioner and refill twice.

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