Pumps for DIY Canister Filter - Page 3 - Tropical Fish Keeping - Aquarium fish care and resources
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post #21 of 27 Old 04-05-2013, 03:20 PM Thread Starter
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I'm not sure why the ceramics are looked down upon. Most of what i've read is you replace as they disintegrate. So you're not really wasting anything. A plus for me.

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Fluval Spec V Steel crowntail betta, 3 zebra danios,
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post #22 of 27 Old 04-05-2013, 03:25 PM
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Quote:
Originally Posted by jaysee View Post
There are similar complaints about top shelf products as well. I received one that leaked - seller sent me a new one and told me to keep the old one, which is nice because now I have some spare parts.

Every one of my filters are set up the same way - I have fluval ceramic prefilters in the first tray - they are supposed to catch large particles without restricting the water flow. In my experience they work very well. The next tray contains the foam mechanical media, ten the rest is filled with biomax. A lot of people here really look down on ceramic biomedias, but they are widely used and recommended on every other forum I've seen.
That doesn't mean they actually do what everyone seems to think they they claim they do. Ceramic biomedia can house lots and lots of beneficial organisms due to the minute internal porosity, that I will admit, and it sounds great on the surface. The problem is that it stays on the surface, the water does not flow through to take advantage of this possibly huge colony at any rate that is worthwhile. It takes pressure differential from one side to the other to force water through the ceramic material and that cannot happen while the water can flow around it.

Rough chips can act as a pre-filter... I might say that course foam works similar enough that the two are equal or that any argument either way is only over a very small difference in performance.

Jeff.


Total years fish keeping experience: 7 months, can't start counting in years for a while yet.

The shotgun approach to a planted tank with an LED fixture

Small scale nitrogen cycle with a jar, water and fish food; no substrate, filter etc
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post #23 of 27 Old 04-05-2013, 03:36 PM Thread Starter
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Don't be afraid to discuss your differences and experiences with media. I totally love seeing and learning all sides of using each media.

Brace Yourself.....Winter Is Coming
75 gallon Angel Paradise Updates:http://www.tropicalfishkeeping.com/f...gallon-220330/
Fluval Spec V Steel crowntail betta, 3 zebra danios,
Fluval Spec V - unnamed dumbo plaket betta, 3 zebra danios
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post #24 of 27 Old 04-05-2013, 04:02 PM
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Yes, I've read that opinion here many times. I just haven't seen it anywhere else.

125 - BGK, chanchito cichlid, pictus cats, silver dollars, palmas bichir
125 - cichlids (severums, bolivian rams, chocolate), rainbows ( turquoise, red), loaches (angelicus, zebra, kuhli and horseface), plecos (BN, RL and clown), denison barbs, tiretrack eel, pearl gouramis, betta
90 - Congo tetras, african knife, upside down cats, spotted ctenopoma, kribensis, delhezzi bichir
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post #25 of 27 Old 04-05-2013, 04:08 PM
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I like my ceramic thingies. I don't really use them as bacteria houses, just as jaysee said to catch the big stuff, because it is is easier to wash than sponges are (I hate washing sponges, especially with my goldfish...)

taking a break from fish-keeping.
3 lovely male betta still keep me company.
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post #26 of 27 Old 04-05-2013, 04:19 PM Thread Starter
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messy piggy goldies. But their faces and pudgy selfs are too cute to turn down ;)

Brace Yourself.....Winter Is Coming
75 gallon Angel Paradise Updates:http://www.tropicalfishkeeping.com/f...gallon-220330/
Fluval Spec V Steel crowntail betta, 3 zebra danios,
Fluval Spec V - unnamed dumbo plaket betta, 3 zebra danios
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post #27 of 27 Old 04-05-2013, 11:02 PM
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Quote:
Originally Posted by jaysee View Post
Yes, I've read that opinion here many times. I just haven't seen it anywhere else.
I'll do some more research and give some links and references as I can find as I am not stating an opinion so much as a logical conclusion based on the facts. If there are contraindicating facts, please post accordingly.

I know that I went looking for methods to measure the pore sizes and calculate the actual surface area of ceramic vs sponge vs sand vs gravel and was determined to prove that ceramics were superior to all the of the others combined given the size of the pores.... only to have my theory proven incorrect. Sand is the best but it can depend on flow rates through the media. Ceramic requires pressure to push water through. Even a simple ceramic filter with about 12 to 18" of standing water has a flow rate of 1 gallon every 2 hours given that the water is forced to flow only through the filter media. In the case where it has the option to flow around the media pieces it stands that it will actually flow through at such a low rate that it is next to useless.

I don't think that any anecdotal evidence of efficacy in and aquarium has much merit as a tank with a standard filter with ceramics will not see any benefit over a the same tank without while using sponge instead. As much as there is no proof that it is ineffective, there is no proof that it is effective either.

The pressure differential required to drive water through the ceramic media to take advantage of the colonies will have to stand indicating that water flow through a loose ceramic media of fine porosity is next to negligible and this negates any benefit that may be gained from a prolific ammonia or nitrite oxidizing colony of organisms.

I may start another thread rather than bogging this one down any further.

Jeff.


Total years fish keeping experience: 7 months, can't start counting in years for a while yet.

The shotgun approach to a planted tank with an LED fixture

Small scale nitrogen cycle with a jar, water and fish food; no substrate, filter etc
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