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Pseudanthias privitera is a stunning medium sized, slender species of deepwater anthias known mostly from the Cook Islands. Sometimes when gorgeous reef fish like these delicate privitera anthias are shipped halfway aroudn the world to aquarium hubs, their subtle beauty doesn’t exactly show. However in these in-situ videos of Pseudanthias privitera taken at 70 meters deep (230 feet) near Moorea shows how stunning the privitera anthias can be, especially in a small shoal. At this depth the Pseudanthias privitera is joined by familiar aquairum fish including watanabe angelfish, multicolor angelfish, helfrich’s firefish and the gorgeous earmuff wrasse, Halichoeres xanti. The video above is kind of slo-mo but the one after the break zooms to a really good money shot of Pseudanthias privitera.
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| Crab Attack.m4v |
Video: Crab Attack.m4v
Category: Competition
Uploader: BarryGQuote:
Originally Posted by BarryG When hermits go mad....
A giant amphipod measuring nearly a foot long is making the news circuit after being discovered near New Zealand at a depth of 7 kilometers. This was not an isolated occurrence as scientists were able to capture seven of these giants that measured in at 28 cm (around 11 in.) that are 10 times larger than your “normal” deap-sea amphipods and three times larger than your typical giant amphipods.
Ever so often a stray giant is found, like the giant isopod that made the Reddit rounds nearly two years ago, but this time the research team was able to film them in their own environment and capture multiple giant amphipods to study. Not to be outdone, there is one supergiant amphipod that got away that scientists estimate measured 34 cm (over 13 in.).
According to new reports, scientists with the university and New Zealand’s National Institute of Water and Atmospheric Research were hunting for deep-sea snailfish when a trap they were using made the unexpected catch of these giant amphipods.
These supergiant creatures were found around Hawaii in the 1970s and 80s but haven’t really been reported since. Being caught 7 km (around 4 miles) beneath the surface also marks the deepest point these supergiant amphipods were found. Check out the video below more more detail.
Thanks Mr. Sprung for the tip!
[via CNN]
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Although we spend hours covering the latest lighting fixtures here on Reef Builders, nothing really comes close to actual sunlight. Adee’s aquarium is a 1340 L (355 G) reef, measuring 2oocm x 1oo cm x 67cm (78in x 40in x 26in). The tank is illuminated exclusively by skylight during the summers, although a MH/T5 fixture is added during the winter simply for better coral colors. Adee noted measuring PAR levels of 350-450 during winter, and 750-850 during summer when using just skylights and ran the tank without supplemental lighting for a almost a year.
The Reef Inmates SPS 400w fixture with 3x Reeftek 10 000K 400w Metal Halide bulbs and 8x 39w of assorted Geisman actinic pure and Geisman aquablue+ T5′s actually shades the tank during the summer – 1500w of lighting is not exactly able to keep up with sunlight apparently. Beside the more natural look sunlight gives to the tank, the growth rate of this tank is absolutely mind blowing. Keep reading for full system details, a video, how much the corals actually grew in a 14 month period and simply a lot more pictures.

Biological filtration on this 355 gallon sunlight reef is provided by 500kg (1100lbs) of Liverock, a DSB with 500lbs of sand, a refugium with Chaeto, and a massive Algae Scrubber measuring 120 cm x 100cm (48in x 40in). Interestingly Abee also uses Aiptasia as a natural filtration in his refugium, yes you read that right aiptasia, a Copperband butterfly is used however to keep them in check in the display tank. Mechanical filtration is provided by two Reef Octopus Bubble Blaster 5000s Extreme skimmers, two canister filters with carbon, and 500ml Brightwells Phosphate Remover in a Phosban 150 reactor.
The tank is dosed a mixture of vinegar, sugar, and vodka, along with Lugols Iodine, Zeovit Amino Acids, MicrobeLift Special Blend (Bacteria), and Brightwells Potassium. A Reef Octopus 140 Kalk Stirrer and Reef Octopus CARX with Calcium and Magnesium media keep up with the massive Calcium and Magnesium demand. Flow is provided by several Tunze’s and SEIO’s. A nursery tank measuring 200cm x 120cm x 25cm (70in x 48in x 10in), with a volume of 600 liters (158 gallons) provides housing for the huge amount of coral fragments and corals that Adee can’t fit in the tank.
Adee’s reef houses around 30 anthias including a harem of Pseudanthias bimaculatus, a group of tangs, an assortment of angels, and several smaller fish. Although the selection of angels include a majestic angelfish, a sulfur angelfish, a flame angelfish, and a regal angelfish all known to be potential coral pickers, the massive colonies do not appear to be much affected. Be sure to check out Abee’s thread for additional info and pictures of this amazing sunlit reef tank.
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We posted about the only captive Lipogramma robinsi in the world not too long ago, and then updated with a short video of it. The old video, nice as it may be, cannot compare to these brand new out of this world videos of the now comfortably settled fish. The tiny basslet is now conditioned and has improved in coloration.
The Robins basslet also seems much more relaxed – notice how it flits around the tank, and flares its fin at every pause, very Gramma like. The uber rare fish is also sharing its tank with a very tiny juvenile Prognathodes guyanensis, but the butterfly, as rare as it may be, is paling out in comparison next to the superstar basslet. Enjoy these two videos of the first and only L. robinsi to enter the market. Big thanks to BlueHarbor for the updates on this magnificent find.
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Digital Aquatics has been hammered lately about their older (System Lab 2) SL2 module. The module just didn’t work right, with incorrect readings with probes and what not. However, Digital Aquatics is set to release a new SL2 module that is expected to fix all those issues. What’s more, Digital Aquatics has decided to initiate a full warranty process. Meaning, if you have an older SL2 module, you’re allowed to return it for a new SL2 module as a replacement for no charge. Of course, with every update their are a few caveats, the biggest being “The new SL2v2 will require the new conductivity probe. Without a proper pairing, the unit and your readings will not be reliable or correct. Because this is so critical, we’ve changed the “jack” that we use on the probe, so that old probes will not work with new SL2s.” When will the new models ship? Digital Aquatics tells us “it looks like we’ll be about 8 weeks out due to longer than expected lead time on a couple of the new parts in the SL2 v2″.
via [Aquanerd] vs Digital Aquatics
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Last month, Vertex Aquaristik (makers of high-end protein skimmers, LED lighting, and calcium reactors) started shipping out their latest product line comprised of three magnetic aquarium accessories: two cleaner magnets and a probe holder. (Read more about these products)
Advanced Aquarist received retail samples; Here are unboxing photos and our short reviews on Vertex's new magnetic accessories.
First up is the Vertex Sensor-Mag Titanium. This product is designed to hold up to three probes to your sump or aquarium glass/acrylic wall using three strong magnets per side. In fact, the magnets were impressively strong and more than capable of affixing the probe holder on walls as thick as 1/2" without twisting.


We found the 13mm/0.5" diameter circular probe holes snug but able to accommodate popular probes available to hobbyists such as those made by Pinpoint. The titanium screw downs worked as expected and were smooth to operate. If you're using Pinpoint probes, you can even opt to remove the screws entirely because the holes are a near perfect fit for these probes (the top black "cap" of the probe is larger in diameter than the hole and will prevent it from slipping all the way through).
For under $25, the Vertex Sensor-Mag Titanium represents a very attractive accessory from both a price and visual point of view.
Next up are Vertex's two new magnet cleaners, the Cleaner-Mag Simplex and Cleaner-Mag Duplex. These small magnets are designed for small aquariums and are extremely well made and attractive, reminding us of aquarium jewelry.
The magnets are impressively strong despite their small sizes. They held very firmly yet glided smoothly when used on 1/8 and 3/16" glass or acrylic commonly found on small aquariums. Both magnets had enough power to provide a solid grip on walls as thick as 1/4" thick, with the Duplex's dual magnets naturally being the stronger of the two magnet cleaners. We were able to "jump" corners with no problems, although it should be noted the wet half will sink if separated.
We found the Simplex's cleaning surface too small for practical application in anything but 'pico' aquariums (<5 gallon), while the larger Duplex is a much more capable cleaner magnet that should tackle the job for tanks up to 20 gallons. The magnet is strong enough to clean much larger tanks but the cleaning surface is the limiting factor.

Here are the two magnets alongside a ball point pen for size comparison.

Overall, Vertex's new magnetic aquarium accessories are produced (and packaged) with the fit and finish aquarists have come to expect from this high-end German manufacturer. The Sensor-Mag Titanium greatly impressed us with its functionality and form; It is arguably the most attractive probe holder on the market and one of the most affordable too. The cleaner magnets may not be the most cost effective or practical algae magnets available (especially the Simplex model), but it's hard to deny their sex appeal.
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On this particular podcast, we all weighed in about our blogs and discussed what it is like blogging about the reefkeeping hobby in general. We covered subjects such as:
Head over to ReefThreads.com and give it a listen. While you're at it, download a couple additional episodes as well. Gary and Christine really do an excellent job covering the reefkeeping hobby on a weekly basis and I highly recommend this podcast to people I talk to in the reefkeeping hobby.
This was my first official podcast and I thoroughly enjoyed my time talking with everyone and hope we can do this again sometime soon!