Filtration Questions

[Turk30213]

Hey All,
I'm setting up a new 90G tank and I am wondering what form of filtration I should use. I plan to set this up as a Fish and Reef setup. And, what is the big deal with Wet/Dry Filters? Thanks!

 

[Navarre]

Is the tank drilled?
If so then you can make use of a sump which give alot more options.

 

[impur]

Yah if its drilled a sump and a closed loop with a SCWD would be excellent.

 

[ostrow]

You want the best skimmer you can afford. Euro-reef and MRC (My Reef Creations) are widely considered the best out there but they are $$$.

You want a refugium on a tank that size too, and since you are reef ready you should plan for that. Wish to heck I had...

 

[Daveo]

over flow is the best. pluss if you have enough substrate and live rocks you end up with filtration just with that.


Daveo

 

[Max]

over flow is the best. pluss if you have enough substrate and live rocks you end up with filtration just with that.


Daveo

two differnt types of filtration, a skimmer, wet-dry, filter, ect. isnt the same filtration as LR does. you still need some sort of filter/skimmer, whatever...

 

[ostrow]

Not necessarily, dragon. A properly seeded DSB with liverock at 1lb/G, and a thriving refugium can easily be kept without any other filtration whatsoever. Those tend to be the nicest tanks, in fact.

 

[Max]

yeah... i guess... i still think that you should have some sort of skimmer, filter ect. but yeah i gues you could...

 

[Max]

The natural method of filtration consists of only liverock and livesand. No protein skimmers are used and no additives are dosed. The nutrient export is provided by frequent partial water changes of 10-15% about every week. Trace elements are replenished through water changes.

As you go about purchasing all of the supplies for your new nano reef, you're going to have to make a decision on which salt mix you should use. Because no additional dosing is usually done with this method, you will want to be using a good reef salt mix. Not all reef salts are created equal however. Unfortunately there is no set data that clearly shows which salt is better over another, which makes the decision even more difficult. The best recommendation I can make is to search around the online forums and see which ones people like best from their experiences.

When starting out your nano reef, your first livestock purchase will be liverock and livesand. You will want to purchase the highest quality live rock as you can possible afford. It will be the entire basis of your filtration so there should be no skimping. Only a small quantity of liverock is needed, so cost shouldn't be so much of an issue. For information on the different types of liverock, refer to the Liverock Selection article. Placement of your liverock can be nearly anything you like, just keep in mind that the more open it is the better.

In this type of system livesand is also important. You can purchase livesand from a variety of places, or create your own livesand by seeding dead aragonite with some sand from an established system. The depth of sand can vary to anything you like. Sand beds from 1/4" to 4" won't produce much of a difference in this system, but there are benefits to both. If the bed is deeper is tends to be a more efficient filter. If you choose to have a deep sand bed, make sure you have plenty of detrivores to keep the sand stirred.

With this natural method, no protein skimmers or dosing is used. Studies of skimmers have shown that they remove various trace elements, along with pods and plankton. When people run protein skimmers, they dose trace elements to replenish them after their corals and skimmers use them. Because the skimmer removes most of the elements, such as iodine, it is dosed back in causing almost an endless cycle. The main problem this holds in nano reefing is that many of the trace elements cannot be easily tested for, so no one ever knows where their level is. This can lead to overdosing which will crash a nano reef in a matter of hours. The skimmer also begins to starve your corals by removing their food source. It's simply too risky.

Protein skimmers are beneficial however, because they remove excess nutrients from the water, but this advantage is out weighed by the disadvantages. To remove the excess nutrients from this system you do a partial water change. The water change also doubles to replenish your trace elements, which are in your synthetic sea salt. Nitrates are removed, dissolved organic compounds are removed, and your trace elements are replaced. Your nitrates will always be at or near zero, and the elements will stay at a constant level.

The whole maintenance procedure only requires about 15 minutes a week, so everyone can handle it. You can take short cuts to save time by pre-mixing water in a new, never before used, 5 gallon bucket and keeping it circulating at all times. Then when it's time to change your water, just scoop it from there. More details on the water changes can be found in the Maintenance article.

The last key factor to this system is having good flow. Use a powerhead or two to give you a flow rate of about 7-10 times the tank's total water volume.

I encourage everyone to try this method for their nano reef. It is uncommon to not use a protein skimmer, but nano reef keeping isn't the same as a traditional sized reef (though this method also works great on larger tanks). It's simple, it's cheap, and there is no equipment to worry about. As I always say, the less 'toys' you have on your reef, the less there is to go wrong.

from nanoreef.com (i woulda posted link but we cant advertise.... even though im not advertising...)

i was wrong...

 

[Navarre]

I have a skimmer but its not used anymore.
3 tanks... 2 toally natural systems. 1 used a Fluidised sand bed alongside the live rock simply because i had it spare and could not afford any more live rock

my other 2 tanks. (all sizes UK gallons which are larger than US gallons)

40 Gallon, 30kg live rock, less than .5 inch of sand. No skimmer, no sump. 150w Metal Halides. and uses Natural seawater.

100 Gallon system with an extra 30 gallon sump.
40kg Live rock (still needs more to be honest) with Reefrack fitted underneath. 1.5 inch sand bed . 400w 10K halide over tanks.
Sump 2Inch base ofMineral mud with various types of macro algea (none is caulerpa) for nutrient extraction.

NO skimmer is used on this system. Water uses is Natural seawater.


Skimmers are NOT necessary although in some types of filtration they are good to have. On a natural system i would not use one as it can remove trace eliments that my corals would live on.

 

[Max]

to bad im stuck whit mine... oh well

 

[Navarre]

I would not run your old system down. )
If it works for you then stick with it. Each system has its benefits and drawbacks. It really just comes down to what will suit you the best.

 

[Max]

i dont evan know what to call mine besides it sounds like a river... its like the water overflows into the back then is pushed back out into the tank.... but before it gets back in the tank it has to go through bioballs and... what ever other media you like... what would you call this? (ps the water is pushed back out into the tank useing a wavemaker if that says anything?)