Cryptic Zone Filtration

mr. bojangsjang

New member
How does cryptic zone filtration work and how does it compare to a protein skimmer or 'fuge? Does anyone here use a cryptic zone? How does one go about setting one up? Are there any risks in using a cryptic zone?
 
no light tanks rock for filter feeders. I have been using a 30 gal no light tank for about 3yrs ( lights burnt out on refuge and i kept it dark) The amount of sponges and other filter feeders are amazing.

Check out the above links - its a different way of doing thing but less hassle
 
I placed hitchhikers sponges and a big spiny orange sponge in the unlit sump, they are alive, but not much new growth, if any.

They have fine food after 100 micron filter sock, it doesn't help. But Q-tip sponges are growing and multiplying happily around and inside the skimmer, in high flow area. Could be temperature issue? This tank is at 79F.

Please, post your data, including type of tank (sps or else, mine - else, messy fish and LPS-softies reef, 90g).
It didn't worked for me, trying to figure out why.
 
I use a benthic zone in my sump. Very similar to a dark sump.

100_0077.jpg


The live rock rubble & chaeto block most of the light, so the zone formed by the eggcrate is low light & low flow. I have had this running for about 2 months and so far it is a mysid factory, but not much for sponge/duster growth yet.
 
Those were some nice links! Usually I only find links to sites that want you to pay money for information when searching for anything to do with cryptic zones.

I really think that the size of the particulate matter is important when designing these zones. Large particles are bad for these creatures.

Dave
 
We also have a similar benthic zone set up in our last two sumps. Here is the latest one :

Equiptment_Upgrade_035.jpg


Underneath the "sand box" is a thick filter type media that is a good place for the benthic creatures to host (I spilled a bit of sand down the front side, so it looks a little "messy" :() :

Equiptment_Upgrade_039.jpg


Here is the media that we used both times (doubling it up to make a "taller" zone) :

Equiptment_Upgrade_031.jpg


I tried to find a picture of the media we pulled out of our old sump (to show it's effectiveness.. it was running for over a year), but can't locate it, and I also thought we had some of the "population" of the current media. I will see if I can take some later, or find our old pictures. But lots of critters take up residence in taht media. We got if from our LFS, and they really weren't good about sharing what it was and where they got it from, likely so that we couldn't go around them and just buy it ourselves, but it also makes it hard for us to share the data. Maybe someone else can recognize it and chime in. :)

HTH
 
sorry..just another term I have heard used for a cryptic zone.. and since I heard it referred to as benthic first, that is what stuck with me. Sorry for the confusion.

Main Entry: ben·thic
Pronunciation: 'ben(t)-thik
Function: adjective
Etymology: benthos
1 : of, relating to, or occurring at the bottom of a body of water
2 : of, relating to, or occurring in the depths of the ocean
 
hehehe, not really.. in fact I just came in from insulating the front garage door, doing maintenance on the prop tank and working on the inwall tank trim. After lunch I will finish up the trim and finalize my HD shopping list and start to tackle the new sump stands :). But I am interested in the information in the links provided, so I will carve out some time later this evening to read up on them :D
 
Pretty good links! It's too bad we can't get more people that have tried this type of system to post some pictures and share experiences.

Dave
 
The media that is in the picture is a filter mat that is used in pond skimmers. Doctor's Foster & Smith has this in their Pond catalog in different cell diameters.
 
Thanks... since I was able to get all that I needed from the LFS I never bothered to pursue what the filter mat was. Now that I now we may consider using it for other purposes also (depending on how much more cost effective it is from Dr F&S).
 
I asked Ron Shimek about his thoughts on cryptic zone filtration, he said it he didn't support the theory at all. Nonetheless, even if it isn't a good filter, it sure is a good producer of pods and such.
 
You will notice that "Dr. Ron" is sometimes on the wrong side of things, as are most of us from time to time. He could be right this time, but I think a lot more research is needed to determine the benefits or potential drawbacks.
 
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