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Scott Fellman

Thinking "Negative": An overlooked Aspect of Aquascaping

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Steve Weast's famous 850 gallon aquarium:
A masterpiece of negative space utilization.


If you read my blogs and articles on aquascaping, you hear me blabber on and on about the virtues of great rockwork, avoiding the uninspired rock wall configurations, the Golden Ratio, etc. Yet for all my talk about rockwork, I seem to have neglected the need to discuss what is known as “negative space” or “white space” in an aquascape

What exactly is “negative space”? Simply put, it’s the part of your aquascape that doesn’t have rock in it! In other words, open sand areas, devoid of rock. These areas perform a multitude of functions, both practical and aesthetic. First, negative space helps “break up” long spans of rockwork, adding visual interest. Creating a focal point in an aquascape is much easier when there is an open area to break up the visual “monotony”.

On a practical level, negative space helps break up territories for fishes, as in the example of a tank aquascaped with multiple rock “bommies”. Each “bommie” can be a territory for fishes and for that matter, corals. If you are inclined to mix aggressive coral species, it gives them a fighting chance if they are isolated on their own individual rock bommie. I have been, and always will be- a fan of multiple small aggregations of rock, scattered throughout the tank.

And the breaking up of “territory” is not just useful for keeping aggressive specimens apart- it can function as a sort of “aesthetic boundry”, allowing you to try different techniques, colors, or coral morphologies on different rock structures.

With proper utilization of negative space, you also get the opportunity to move a lot of water! The “gyre flow” that you often hear discussed in fish geek circles works exceedingly well in this type of aquascaping configuration. A deep (ie; deep front-to-back) tank really comes alive with negative space, and even a small aquarium can look bigger when every square centimeter is not crammed with rock! Creating channels and open areas makes maintenance very easy. Since you won’t have huge walls of rock to contend with, access to many areas of your tank should be quite simple.

Imagine being able to get a siphon hose into the aquarium without knocking over corals! You’d actually be able to work in the tank without fear of destruction! For that matter, why not utilize the sand for corals?

In the end, it’s all about what moves you, but if you want to try something just a bit different, leave some open space in your rockwork and see what it can do for your aquascape. I think that you-and your fishes- will enjoy the open space.

If you want to truly push the aesthetic envelope, try an aquascape with entirely negative space…no rock at all…just corals, similar to Leonardo’s famous and beautiful “Formosa Forest”., a “no scape”, which inspired countless hobbyists with it’s completely different take on aquascaping.

By carefully utilizing negative space in your aquascape, you will also create “forced perspective”, which makes the aquarium seem much larger and/or deeper than it really is. In this era of smaller “nano” aquariums, it’s a valuable technique that can make the difference between mundane and specatacular! So, for perhaps the first time in my life, I’m encouraging every reefer to get out there and “embrace the negative!”


Until next time,

Stay Wet

Scott Fellman
facebook.com/scott.fellman

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  1. melev's Avatar
    Great write up, Scott. The one thing you didn't mention is the downside of people asking you over and over when you'll add the rest of your live rock to your tank. I repeatedly got that particular question when I set up the 400g. Not that it made me add more. LOL

    I truly miss Steve's tank. I hope he'll put up something amazing in 2012.
  2. DJ in WV's Avatar
    Always look forward to reading what you have to say Scott.
  3. Scott Fellman's Avatar
    Thanks for the kind words, you two. Marc, you bring a up a great point! I think that we're so indoctrinated into thinking that you have to cram a tank full of rock (a holdover from the philosophy of the early eighties, when it was thought that you need "x" pounds per gallon of rock to "filter" the water, no doubt. The irony is that the only way to fit 200 lbs of live rock in a 100 gallon tank is to build...a WALL! So, hopefully, we will reconsider the idea that "less can be more" in aquascaping!
  4. melev's Avatar
    246 views so far, Scott. Keep up the good work.
  5. dzrtrataz's Avatar
    Nice read, some very good points.
  6. trplxj's Avatar
    thanks for the info. My 90 is a wall and I don't like it. When I move it into the 180 I'm wanting to have much, much more open space and more sand bed. I will have to keep this article in mind.
  7. Paul B's Avatar
    Nice aticle Scott. For years I have been removing rock from my system and I am on a quest for negative space while conserving the feeling of a true reef by limiting the view of the back of the tank. It is much easier in a very large tank but my tank is only 14" front to back so it is more challenging, but I love a challenge.