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Old 10-18-2004, 08:01 AM   #1
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wet dry vs. sump

I keep reading how wet dry's are not the way to go. Mine seems to be doing great and I don't want to mess up the way things are going now, scared I guess. But what exactly would I notice if I did switch to a sump? How hard are they to run? What do they require? Can I convert my wet dry into a sump? I thought I read somewhere that you could. Also, are they better for reefs?


Alex n Mary

150 gallon, 30g fuge/sump, 4.5 watt/gal VHO Lighting, 4" sand bed, 290 lbs LR, CDX-3 Nitrate/Phosphate filter

Female Naso "Isabell" or "Izzy", Emperor Angelfish, Flame Angel, Red Sea Sailfin tang "Bambi", Maroon Clown "Nani", 5 Chromis, 1 Aglae Blenny "Bengi" , Yellow Watchman Goby, pr of Banggai Cardinals, Lyretail Anthia, Six Line Wrasse

1 cleaner shrimp, Coral Banded Shrimp, lettuce nudibranch, 1 sand sifter stars, 1 tiny red brittle star "red", 1 tiny red and white banded serpent star, 2 tiny banded serpent stars, small orange Linkia starfish, assorted hermits and snails. Corals: star polyps, A ton of different types of mushrooms, yellow zooanthids, brown-orangish and light blue paly's, orange ricordia.

90g RR, W/D, 120 lb's LR SF eel, pygmy angel, pr sebae clownfish, 4 chromis. Star Polyps & Mushrooms
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Old 10-18-2004, 09:23 AM   #2
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A sump is simply a wet/dry with out the bioballs. A wet/dry is basicly a sump with a chamber dedicated to bioball media to have water trickling over it.

As you can see both are very simular and their overall operation is the same when it comes to keeping it filled from evaporation, etc.

The theory with the wet/drys is that the highly oxygenated bioball area will promote nitrates. If you have a DSB its possible the DSB and the nitrate capacity of the bioballs will cancel eachother out. If you want to convert the wet/dry to a sump then you can slowly remove the bioball media over a few weeks time. Then extend the drain line so its not splashing and making so much noise due to the removal of the bioball media.

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Old 10-18-2004, 12:07 PM   #3
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That is preety much what I did with mine. I removed the bioballs and replaced them with 30lbs of LR rubble. I keep the water line well above the rubble so it is always completely covered.
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Old 10-18-2004, 12:36 PM   #4
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I was scared into making the change. After horror stories of the bioballs poisoning tanks fast from small power outages, I simply removed my bioballs and placed a skimmer (sea clone I think) in the larger side. I did leave the sponge that was inbetween the two chambers in place and also the changable pad which I replaced when needed as it removed a lot of debris.

I never had a problem with my tank and it was up for a few years like this. We had power outages (we're in florida) a lot and as long as the media is fully submerged the die off is much delayed, unlike the case with the bioballs.

I say take them out unless you have a power back up for your tank.

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dry, sump, wet, wet dry

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