Rena XP3 Canister Filter - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 7 Old 11-30-2006, 02:41 PM Thread Starter
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Rena XP3 Canister Filter

I just got two Rena XP3 Canister Filters and all it came with was some activated carbon and some sponge to filter the water. I wanted to know should I add the Bio-Chem Stars or the Ceramin Rings to allow bacteria to grow. Also should I add Bio-Chem Zorb with the carbon for added filtration. I am setting up a new 180gal fish only tank. It will have 100lbs+ live rock and 100lbs+ reef sand.
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post #2 of 7 Old 11-30-2006, 04:46 PM
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I heard that carbon is not supposed to be used on a salty tank
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post #3 of 7 Old 11-30-2006, 05:07 PM
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should I add the Bio-Chem Stars or the Ceramin Rings to allow bacteria to grow.
Do not use either. they are not good for a salt tank. They will be nitrate factories. As for the carbon you can use carbonin a salty tank.
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post #4 of 7 Old 11-30-2006, 07:05 PM
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usmc if he should not use Bio-Chem Stars or the Ceramin Rings than what should he use?
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post #5 of 7 Old 11-30-2006, 09:05 PM Thread Starter
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So if I can't use any of the items that I listed then what am I supose to use for filtration. I can't just put in some filter pads.
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post #6 of 7 Old 11-30-2006, 09:35 PM
USMC is on the right track. Typically it is not recommended for a salt tank to run a canister filter. However many people have forgotten about fish only tanks. Nitrates, trites, ammo, are all very bad in a reef tank. A canister is known to produce those items.

I wouldn't say you should toss it out.

Canister filters are good in fish only tanks as the fish are able to withstand a higher elevation in parameters more than corals and inverts. One thing to keep in mind is that it should be used more as a mechanical filter than as a biological filter. As in you should plan to clean it once every other or once a week.

Carbon is ok and recommended to run in salt tanks. But it has it's limits. You are far better off running it in the fish only set up. It will not do much harm. Plan to run it more like every other cleaning. That way it won't suck up as much of the beneficial suplements of the salt mix. It is only recomended for use in reef tanks when something bad is happening. If you need to quickly isolate a problem, say a dead fish, run it for a couple of days. The reason you would not want it running continuously is that it will absorb to much of the suplements necessary for a thriving reef.
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post #7 of 7 Old 12-01-2006, 12:22 AM
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Good info about the carbon. This is an area where many people waste a lot of money to replace the trace elements that the carbon will soak up in a saltwater tank. Even in a fish only tank, if you use carbon all the time, be sure to test and be prepared to replace trace elements with suppliments.

Dawn Moneyhan
Aquatics Specialist/Nutritionist
Juneau, WI
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