One of the most common creatures kept in the reef aquarium trade other then corals and fish are feather dusters. Feather Dusters come in many diffrent sizes and colors and the more common ones such as the Sabellastarte indica (shown above) are very hardy and easy to keep. Feather dusters offer the reef aquarist diversification within the reef tank and it is an interesting subject to talk about as most people in my experience don’t realize that it is a marine worm.
Purchasing a Feather Duster
Picking out a feather duster is not an easy task as it may seem. There are several things you should look for when purchasing a feather duster. One of which is if the crowns (the feathers) are still attached. The feather duster should have a full crown, the crown should look healthy and the worm should retract into it’s tube when scared or if approached from the side of the tank. The marine worm should react and retract to shadows as well. When looking to buy a feather duster its best that the feather duster be in the dealer’s reef tank for a while. If the feather duster has been in dealer’s reef tank for some time then it should be well acclimated and well fed. Newer deliveries of feather dusters tend to be hungry from being moved from tank to tank or tank to bag. Make sure that the feather duster you are picking out has a complete tube without any damage.
Feeding and placement of a Feather Duster
Depending on the type of feather duster you acquire you will want to research where the best possible placement is for it. The most common feather dusters as pictured above will feed on live brine shrimp, nuapali, rotifers and finely minced “meaty” foods. They capture the food particles in there crown of feathers and bring it down to there mouths, they may retract after capturing food. Placing a feather duster such as the one pictured is relatively easy for us that have a full blown reef tank. The feather duster prefers vigorous water movement so that it can help with the exchange of wastes and the capture of food. Most common feather dusters prefer to be placed in the sand or if you have a bare bottomed reef tank then between rocks (as long as its not crushing them!). If the feather duster does not like where it is placed then it will abandon its tube and look for another spot. The feather duster above, has moved before and ended up living in a hole in my live rock. Another thing to note is when moving your feather duster its important not to expose it to air if at all possible, captured air bubbles in a feather duster’s tube can spell disaster for the feather duster.
Water Parameters for a Feather Duster
To keep a feather duster in your reef tank it is recommended that you have very good water quality. From my experience, they will loose there crowns if you have an excess in nitrate. I would also assume other water quality issues such as ammonia, nitrite and salinity would also come into play. If you are not sure of what your reef aquarium’s water quality should be at then check my post marine aquarium water parameters.
If you would like to share your thoughts and information on on the marine feather duster please do so with the comments button below.
In case anyone missed the news back on August 4th of 2008, Tonga live rock is no longer available for exporting. There was talk about cutting back on the corals from that area as well but I cannot find any more information on it. This is unfortunate for us reefers because we will loose out on some great looking pieces of live rock that come from that area, such as the Tonga branch.
This next link is a letter written from Walt Smith (One of the world’s leading Live rock exporters) addressing the issues that he has had trying to keep the live rock exporting going until Tonga could start an aquaculture program. http://reefcentral.com/forums/showthread.php?s=&threadid=1437433
I recently received an email from a reef aquarist that was concerned about her reef tank and sump setup. The person was looking for a way to prevent siphon into her sump and thereby preventing flooding of her sump and display tank. I wrote her back saying that I would right an article about preventing overflowing her sump and I gave her some tips on how to do such.
So how do you prevent your main tank from overflowing your sump in case of a power outage or some other saltwater tank catastrophe? The short answer is simple. Make sure that you leave enough space for saltwater in your sump in case your main tank siphons the water down into it. So then what if your sump can not handle all the saltwater from your main tank? Then you have to get clever and figure out ways to break a siphon or to prevent the overflow.
Let’s take my 46 gallon bowfront for example. The main tank is 16″wide by 36″ long and when in a power outage my tank will loose 1″ of water due to a siphon before the water line hits my siphon break. If my tank does not siphon break at 1″ below surface it will then loose 3″ of water. Using the volume calculatorover at reefcentral.com I can predict that my 46 gallon tank will siphon down 2.5gallons of water into my 10gallon sump. If It does not break at the 1″inch siphon line then the tank will siphon down 7.5 Gallons of water.
My sump is only a 10gallon sump packed with equipment and the dimensions are 10″ wide, 20″ long and I keep it 5″ empty (meaning almost 3/4 full of water). This allows me to have 4.3-4.5 gallons of siphoned tank water (from my 46gallon) before my sump overflows.
So if my siphon breaks are not cleaned correctly or if there happens to be a snail on each one during a power outage then I will flood my sump and about 3 gallons of saltwater will pour onto my floor and my wife will make me buy her new carpeting. As improbable as it seems that two snails will cover my siphon breaks at the same time, it does happen. This is why I keep 5″ of empty space in my sump, after all 3 gallons of saltwater is much better then 7.5 gallons when it comes to overflowing your tanks.
Pictured above is my 10 gallon sump, as you can see there is 5″ in the sump to cover for siphoned water. The “Fill to here” sticker is so that my tank sitter knows how much water to replenish when I am away.
Siphon breaks are just as important to Sump reefers as lighting is. It is a protective measure that everyone running a sump should look into and use. I created my siphon breaks on my 46gallon reef tank by drilling holes into my return line U tube under the water line right before the water from my sump is discharged into the tank. When the water level in the main tank drops due to a power faluire the holes in these tubes will start sucking air and break the siphon.
The above and below pictures are of the U tubes that I drilled to create siphon breaks. Notice on the bottom picture that the siphon break is about an 1″ under water when the tank is filled.
Another method to preventing siphons are PVC check Valves. These are great if your return lines are constructed of hard PVC pipes and if your handy enough for vinyl tubing as well. They make these PVC check valves in many different sizes and threading.
