Ultramarine Magazine Issue 64 JuneJuly 2017

 Anatomy of an Atoll and the coral becomes a little more consistent. Shoals of anthias, including Pseudanthias squamipinnis, P. ...

snappers, jacks, trevally and the odd Grey Reef or Whitetip Reef shark are easily spotted as are batfi sh that often come close ...

 Anatomy of an Atoll J u n e 2 017 43 ...

44 http://www.ultramarinemagazine.co.uk Definitive Guide to: UV & OZONE Text and images by Dave Wolfenden Ultraviolet steril ...

 UV & Ozone all pathogens passing through, but too many are missed and afforded an opportunity to build up in the aquarium ...

Steriliser or clarifier? UV units for pond use tend to be clarifiers. These affect the free-floating algae causing ‘green water’ ...

J u n e 2 017 47  UV & Ozone Ozone Ozone is O3 – three oxy- gen atoms linked together as a molecule. The ozone molecule is ...

Myth-busting: Higher ORP = healthier tank Redox values can give a simplistic indication of the ‘cleanliness’ of water, but it’s ...

...

50 http://www.ultramarinemagazine.co.uk Trans-Atlantic Reefing Observations on US and European Approaches to Reef-keeping In the ...

J u n e 2 017 51  Trans-Atlantic Reefing Getting down to business Firstly, more and more Ameri- cans seem to view reef-keeping ...

52 http://www.ultramarinemagazine.co.uk Americans do. This may be due to their having a better un- derstanding of how the corals ...

J u n e 2 017 53  Tube Anemones were still using metal halides or even more were using T5 lighting. When they were run- ning LE ...

54 http://www.ultramarinemagazine.co.uk the room. Another interesting thing that I noted is that, unlike in the States, female r ...

The long-established tank of Julian Sprung housing both large colonies and bright colors despite using minimal blue light he mag ...

every store I visited sold or kept a lot of SPS corals. When I asked why, the response was kind of startling: to the shop owners ...

 Contributor Biographies ...

Frontal view of a harlequin shrimp displaying its large, spatula-like claws. Photo by prilfish. 58 http://www.ultramarinemagazin ...

Images and text by Kenneth Wingerter (unless credited otherwise) Aquarium hobbyists are a rather disparate lot, having many diff ...

60 http://www.ultramarinemagazine.co.uk Objects of beauty It really does not take a lot of imagination to suppose the harlequin ...