Filtering and Stability

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D328jet

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Hello everyone, I have been reading so many of your posts that have gotten me well into a year in the hobby and hope to continue successfully, but for obvious lessons learned. I am posting this on a few forums so I hope there is little overlap but moderator, please feel free to move/delete if against the rules. I'm just looking for perspective on why something has been working because it goes against all traditional thinking.

I have been though many evolutions of filtering, but the priority has been minimalism, namely a single 100g HOB filter with porous rock balls inside. This was the destination although I have been through bio pads, carbon, etc. inside it. I have even gone through wrapping cotton around the inlet, changed each day, but wanted something more sustainable.

I ended up without anything but the balls inside with no particulate filtering, a natural solution that I knew once a month I would clean the interior and the balls and let it run its course, particles flowing through and back out or getting caught, but some getting recycled back into the tank. I have Chaeto growing in a basket and free in the tank behind a few rocks with good flow through them as well and they are thickening and expanding.

I have tried to list the tank contents/parameters in my signature. I'm sure I'm missing something.

With light feedings and seemingly happy fish, all my softies and Bubble tip are healthy and growing to the naked eye. The lighting seems to be right, little algae exists in the tank, partly because of the white and clear organisms that started growing in the HOB filter. All kinds of pods have populated the filter as well as the sand and rock.

What I'm wondering is if I have achieved a balance of organic/natural filtering that has grown to balance the tank inhabitants and their load. This was the goal, although I wasn't ready to let the filter get that "dirty," but it seems to be doing a nice job of processing things. I see so many with all kinds of filtering mechanisms and nutrient output items and I challenged myself to not use any of it, instead finding things that did the job naturally between inhabitants.

I have been topping off with rodi water from the LFS and feed frozen shrimp as well as diced seafood from the grocery store. Trying not to over feed, overnight, the tank sand is always clean of uneaten food, no doubt attributed to the crabs and shrimp scavenging at night. There is no dosing of anything to the tank although I throw in Cyclops and target feed once in a while to be sure everything is eating.

I know this goes against all traditional thought, but I figured there had to be some way to get a tank stabilized eco system wise. That was the goal at least. I know there are plenty of nay sayers and I have read their posts.

Is success the only gauge? It has been a challenge getting here with an ick outbreak after some salinity runaway that was my fault.

The softies and acan are happy and growing, especially the frog spawn.

Thoughts on the filtering?

Thanks for all the perspectives coming. I look forward to theories, suggestions and the inevitable nay sayers.
 
First off, welcome to the forums :)

What do you mean when you say there are nay-sayers, and what do you expect they will post in this thread? Do you think your setup is particularly unusual in that uses a HOB filter?
 
Thank you. Great to be here and learn!

The people that subscribe to the skimmer, reactor, sock filter, etc. crowd.

I think it's unusual that I have no filtering mechanism other than the porous rock balls and let the filter run dirty, as what grows in it seems to do a great job of taking out nutrients and reducing my phosphates, but lets particles get redeposited into the water column for the fish and scavenger livestock to take care of. Actually I'm wondering if you could accomplish this without the HOB filter.
 
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Thank you. Great to be here and learn!

The people that subscribe to the skimmer, reactor, sock filter, etc. crowd.

I think it's unusual that I have no filtering mechanism other than the porous rock balls and let the filter run dirty, as what grows in it seems to do a great job of taking out nutrients and reducing my phosphates, but let's particles get redeposited into the water column for the fish and scavenger livestock to take care of. Actually I'm wondering if you could accomplish this without the HOB filter.

Many people, such as myself, think skimmers are desirable for several reasons (especially aeration), but we certainly recognize that people can also have nice reef tanks without them.

Would your tank be better with one? Maybe. The only way to know for sure would be to try one. [emoji3]
 
Thank you. Great to be here and learn!

The people that subscribe to the skimmer, reactor, sock filter, etc. crowd.

I think it's unusual that I have no filtering mechanism other than the porous rock balls and let the filter run dirty, as what grows in it seems to do a great job of taking out nutrients and reducing my phosphates, but let's particles get redeposited into the water column for the fish and scavenger livestock to take care of. Actually I'm wondering if you could accomplish this without the HOB filter.

People typically recommend filter socks, skimmers and chemical media in a reactor because we've been filtering our tank water this way for a very long time, and these methods have proven to be exceptionally efficient. In certain tanks like SPS-dominant tanks with lots of fish, having as much and as effective filtration as possible is absolutely critical.

There are some tanks in which pristine water quality is not required. Your tank sounds like one of them, containing mostly low-demand corals and fish. Even in these tanks, however, more advanced methods of filtration can be beneficial if nutrients become a problem. At the very least, filtration techniques can reduce the frequency of your regular water changes. This becomes especially important the larger your tank is. A 25% water change on a 240 gallon tank is 60 gallons. That's almost $17 of salt mix alone, and that's if you're using some of the cheapest salt available (Instant Ocean). This doesn't even include the cost of water or RO/DI media exhausted to make the water.

The reason people typically recommend the standard skimmer/filter sock/chemical media is because they work really, really well. Does that mean you need to use them to be successful? Absolutely not. But that's why they're frequently recommended, because they all work so well.

And to answer your question, your HOB filter is likely doing very little. If you have live rock and some powerheads for flow, you likely don't need it.
 
An aquarium with enough rock, enough flow, a good light and regular water changes will let you successfully keep a lot of stuff. It was how I did it for years.
 
An aquarium with enough rock, enough flow, a good light and regular water changes will let you successfully keep a lot of stuff. It was how I did it for years.
All my Qt tanks are this. With O2 in smaller volume apps.
 

IF YOU HAD TO TAKE A REEFING EXAM, WOULD YOU PASS?

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