#TinyTankChallenge – Brian Update #1

The tank is filled, the filter’s pumping, and the hardscape is all in!


To start, I tested the filter to make sure it worked. I hung it on the side of an operating tank for several days to help seed the filter media with beneficial bacteria. To continue cycling the tank, I added a couple of sinking food pellets to serve as a source of ammonia. I also tossed in a small handful of gravel from the existing tank to help seed those beneficial bacteria even more. The filter is nice and quiet, and is creating a nice gentle current across the tank.


I acquired some driftwood from an LFS. I knew it was going to be too big to fit, so I cut some of the end off with a coping saw. I then soaked it in dechlorinated water for a couple of days to make sure I leached out any excess tannins from the wood. When the water was all clear, I added it to the aquarium. I scrounged up some river stones from an old aquarium I have in storage to help add to the riverbank feel of the scene. I may tweak it a little more. I’m not entirely happy with the depth of the gravel, so I may change it once the plants are here.


I changed my mind and decided to use a lid on the tank to help reduce evaporation and to retain some heat. I made the lid out of a leftover acrylic sheet I had on-hand from another project. I cut custom notches in the lid to fit the filter and the clamp for the light, so the lid sits flush on top of the tank.

Finally, I was able to locate (on eBay) one of the location-specific plants needed to make this a true biotope setup. I’ve ordered the first batch of plants (some Blyxa japonica, sometimes called the bamboo plant), and they should be here by Tuesday!

s-l500Running total:

  • Previous spent: $53.48
  • Driftwood: $12.00
  • Bamboo Plants: $6
  • New total: $71.48

Wish me luck finding the rest of my plant list. Finding the right species is trickier than I thought!

#TinyTankChallenge – Brian

I thought I’d give a little more detail on my #tinytankchallenge project. Like Ethan, I will be using a “standard” 2.5-gallon tank. Unlike Ethan, I will be creating a freshwater biotope aquarium using plants and fish from the White Cloud Mountain area of China. White Cloud Mountain is the type location (the place where a species is first found) for the White Cloud Mountain minnow (Tanichthys albonubes), my feature species.

White Cloud Mountain Minnow, Tanichthys albonubes. Photo by sannse. This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.

A biotope aquarium, as I mentioned in my previous post, is an aquarium that uses livestock and design elements from a specific geographic region. This can be as precise as only choosing plants and fish from a particular spot in a particular stream, or as general as using plants and fish from the same watershed, or even just the same country-of-origin.
As far as equipment goes, I’ll be using a 2.5-gallon tank I had on hand for another project that never came to fruition. I’m happy to put it to good use here! I will not be using a lid so I can maximize the light reaching the plants.


I’m using a fine gravel substrate that I purchased when it went on clearance ages ago. At the time, I think I may have paid a dollar for the bag, but a five-pound bag of this kind of gravel typically runs around $5 or so. Plants prefer a finer grain, and I’ve done really well growing all sorts of rooted plants in this type of gravel. I do realize that this isn’t “plant substrate”, but I’ve had good success using this less expensive gravel and occasionally supplementing with root tab-type fertilizer pellets.


Filtration will be provided by a small hang-on-back filter that I’ll actually hang on the side of the tank to create a nice current. This will mimic the flow found in sluggish streams, similar to the ones in which White Cloud minnows live. The filter cost $22.50 at an LFS (local fish store).


I will use this small LED light bar to light the tank. The LED light cost $19.99. This tank light has a number of benefits: it’s very bright, it has a small size, and therefore it doesn’t use much power. One negative feature is that it IS so small, so I may end up getting something else. Updates to come! The tank won’t need a heater, since the plants and fish all come from cool-water habitats.


Current Project Costs:

  • Filter – $22.50
  • Light – $19.99
  • Gravel – $1.00
  • Tank – $9.99
  • Total – $53.48

So that’s where I’m at coming up to the beginning of the year. Next steps include rinsing the gravel of dust, research into the species of plants found in the type location, locating those plants for purchase, and starting the cycling process in the tank itself.

Stay tuned!

The Desktop Challenge!

Starting this January 1st, some fish-head friends and I are starting what we’re calling the 2016 Desktop Challenge. We each are designing and building a small aquarium that could be kept on a desk or a strong shelf. The idea behind the Challenge is not to compete against each other, but to challenge ourselves as we practice our aquarist skills and promote the hobby. IMG_7374

The parameters for the challenge are as follows: the tank size must be less than five gallons, and the project must cost less than $100. Other than that, the rest is up to the individual aquarist. Freshwater or saltwater, aquarium or paludarium, with fish or without fish, biotope aquarium or community tank, the possibilities are endless!

From en.wikipedia: White Cloud Mountain Minnow, Tanichthys albonubes. Photo by sannse. This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.

My own entry will be housed in a 2.5-gallon glass aquarium. I am researching plants and hardscape for a Southeast Asia biotope aquarium. A biotope aquarium is one where all the plants, fish, other livestock, and design elements come from the same geographic location. White cloud minnows have always been one of my favorite aquarium fish species, and few of them will do really well in a small, planted, unheated tank.

We want to invite anyone who wants to set up a desktop aquarium of his or her own to join us this new year. We’re here to offer advice on equipment, setup, livestock choices, and any other question a beginner may have. Follow us on Twitter, using the hashtag #tinytankchallenge, to find the participants, get updates on our progress, ask questions, and show us YOUR progress!

Happy New Year!

A quick word about used aquariums

There are a lot of places one can get a used aquarium: Craigslist, eBay, local newspaper ads, or even at swap meets at your local aquarium club. This is a great way to save some real money on a new-to-you aquarium. You can even find people who are just giving away aquariums for free! But, since the aquarium is going to become the entire world to your future aquatic charges, there are a few things you should consider about your new tank.

Many people use fish tanks as housing for pet reptiles. As such, these tanks are often cleaned using soap and water, or other cleaning products. Make sure the used aquarium you are acquiring has never had any soap in it! Soap residue can and will remain in a tank for pretty much forever, and even trace amounts are deadly to fish and other aquatic animals.

Older tanks, especially the all-glass style of aquarium, can develop leaks in their silicone seals. The aquarium pictured below is a tank I got from the curator of fishes from the museum at which I volunteered when he retired. The tank was made in 1991, which means it rolled off the line when I started high school.

My new-to-me 30 gallon long.
My new-to-me 30 gallon long.

To test the tank for leaks, which are pretty likely in a 24-year old tank, I set it out on my porch and filled it with water.


After it was completely filled, I let it sit for several hours. That way, if there was a slow leak somewhere in the silicone, the tank would eventually show it.


Happily, the tank is leak-free. If you leak-test your tank and do find a leak, here’s a video showing how easy it is to reseal an all-glass tank. This tank is my native freshwater fish project tank, the construction and design of which will feature here on Parlour Oceans. Ethan, founder and coauthor of this blog, will be featuring his saltwater DIY cephalopod system, as well!

Water Changes!

Here at Chez Spears, we like alliterative days for things: Meatball Monday, Taco Tuesday…you get the idea. I’ve found that using alliterative days to be a very useful shorthand for streamlining and making menu-planning easier for my family.  This handy tool is also useful when it comes to remembering to do an extremely important aquarium task, and so Water-change Wednesdays were born.

Why do water changes?

Fish in the wild generally live in bodies of water much larger than the largest of aquariums, often with strong currents, which helps to dilute or wash away any waste products the fish make. This isn’t so in our much, much smaller glass boxes of water. Fish waste has nowhere to go. Our fish do get some relief from the beneficial bacteria that break down ammonia and nitrite, two chemicals that are very dangerous to fish health. (See: nitrogen cycle). Live plants will take up some of the nitrates the bacteria produce, but high levels of nitrate are also damaging to fish health. Then there are the organic acids that can alter tank pH, and other nasty byproducts of decomposing fish waste that just sit and build up in the tank water. We can alleviate some of these issues by using extra mechanical filtration, various scrubbers and reactors, and chemical filtration in the form of resins and other compounds, all to target and remove specific waste products. One thing all of these methods have in common is that they are expensive!

This is where water changes come in. Changing your tank’s water is the easiest and least expensive way to maintain high water quality. What I mean by a water change isn’t just topping off the tank to refill what’s evaporated, but physically removing some of the old water and replacing it with new. Removing a portion of the water from the aquarium removes the nitrates, the organic acids, and other waste byproducts directly from the aquarium. Replacing that old tank water with new water helps to further dilute any remaining waste products until the next water change. New water also replenishes the essential minerals that fish absorb from the water column, similar to the minerals we ingest from our drinking water. Couple your water changes with gravel cleaning, and you can remove any solid wastes (fish poo, leftover food) that may have collected in the aquarium substrate as well.

How much do I change, and how often?

There are as many opinions on how much water and how often to change that water as there are aquarists. One thing they do agree on is that breaking a tank all the way down to clean it is unnecessary. Doing so not only stresses the fish out when they are removed from the tank, but breaking the tank all the way down destroys the tank’s biofilter, since it kills off all the beneficial bacteria.

In my experience, changing around fifty percent of the water once a week seems to work well (Water-change Wednesdays ring a bell?). The fish stay in the tank throughout the process, and seem to enjoy their freshly cleaned water after I’m done. Replacement water is made up to match the current tank water parameters as closely as possible so as not to shock the fish by any rapid water chemistry changes. Since my fish all tolerate my local tap water parameters, all I really do is make sure I’ve removed any chlorine or chloramine that’s been added by the municipal water treatment plant, and match the temperature of the tanks.

Water change equipment 

The basic equipment you need for water changes are: buckets for new water, a bucket for old water, a gravel siphon, and some kind of water conditioner. Your friendly neighborhood aquarium shop, or big box pet store if you don’t have any locally owned shops around you, likely has knowledgeable and friendly staff that will gladly sell you everything you need on this list, and at full retail prices. I’m not saying they’re trying to cheat you, but I will say that water change equipment is one place you can save some money, if you know where to look!

Let’s start with buckets. My local big box pet store has a 3-gallon bucket they sell for around $12. For me to do a 50% water change on my 29-gallon aquarium, I’d need six of these (five for new water, one for old water)! Or, I could go to Home Depot and pick up a good ol’ 5-gallon Homer bucker for $3. Sparing you (and me) the math, that’s a lot of savings!

The sturdy Homer bucket, and supplies for a DIY gravel vacuum.

Water conditioners can be pretty pricey, too. A 16 oz bottle, at the same big box store, of a brand-name water conditioner goes for around $13. The store brand, which is actually made by the same exact name brand manufacturer, goes for $9.99. If your town or city uses only chlorine to treat its tap water, you don’t even need water conditioner. Letting your new water sit for a day or so in your make-up water buckets is long enough to let the chlorine come out of the water on its own. However, chloramine won’t naturally dissolve out of the water, you’ll need a water conditioner to break the chemical bonds between the chorine and ammonia molecules.

Gravel vacuums and water siphons are another area where you can save a lot of money.  At the big box store, siphons range from around $8 for your basic vinyl tubing gravel vac, around $15-$25 for vacuums with built-in hand pumps to start the siphon, all the way up to $69 for a very fancy venturi faucet-driven vacuum. There is a DIY option, however, that can save a ton of money, if you don’t mind the old-fashioned way to get your siphon going.

DIY gravel vacuum

This build uses 5/8″ vinyl tubing that you can find at your local hardware store. I found 10 feet of it for a little less than $5. This will form the siphon. The gravel vacuum attachment is a 20 oz. Coke bottle. Start by drilling a hole in the bottle cap slightly smaller than your tubing. I used a 1/2 inch drill bit to make this hole:

Once your bit is through the plastic, wiggle it around a bit in there to make the hole slightly larger. Your fingers will thank you later.

Next, insert your tubing into the hole you’ve drilled in the top of the bottle:

Crimp the tube slightly with your fingers to get it to squeeze through the hole. You don’t need to push it in very far, about an inch or so is enough.

Lastly, cut off the bottom of the bottle, and trim the hose so you have about five or six feet of tubing attached to the bottle:


Voila! A homemade, DIY gravel vac, and it really works!

How do I DO a water change?

First, make sure you’ve prepared your new water beforehand. Next, get your gravel vac and old water bucket and head to the aquarium. I recommend bringing along a few towels. They’re good for soaking up any spills, as well as drying off the front of the tank when you’re done. Then, you need to get the siphon started.

I’ve always been partial to starting my gravel vacs the old-fashioned way: sticking the vacuum end in the tank and sucking on the tube end to get a flow going. If you have enough practice, you CAN avoid sucking in a mouthful of old tank water. Another option you can use is submerging the entire tube in the aquarium and filling it with tank water. You can then cap the tube end with your thumb, remove it from the tank, and place it into your old water bucket. Once the flow is going, stick the gravel vac end into the substrate and suck out all the old fish poo and whatever else is lurking down there!

I don’t know who Cassandra is, but she’s very nice for letting me hack her Coke bottle.

Once you’ve removed as much old tank water as you need to, slowly pour the new water from your make-up buckets into the tank. I use my hand to spread out the new water as it pours in, so as not to disturb any plants’ roots or the substrate. What to do with the old water? Give it to you house plants and container veggies! It’s full of wonderful organic fertilizer that they simply love.

Why we love water changes

Here at Parlour Oceans, we believe that maintaining high water quality on a budget is easy (and best!), and water changes are the way to do it. Keep your fishes’ water fresh and clean, and they’ll reward you with vibrant color, vigorous activity, and long healthy lives.

A ‘virtually’ free Parlour Ocean

If you’ve ever dreamed of enjoying a scene like this in your own living room:

Sand tiger shark with hundreds of its closest friends

Or like this:

Cruising sandbar shark
Cruising sandbar shark

Or maybe like this:

Sandbar shark swooping into a school of baitfish for a bite
Sandbar shark swooping into a school of baitfish for a bite

Then point your Chromecast, your Apple TV, or your Roku at this link: http://explore.org/live-cams/player/shark-cam.

Most of us these days have one of these devices to watch streaming media on our televisions, and now we can turn our TVs into a virtual window into the Atlantic ocean. “Shark Cam” is a live-streaming webcam that broadcasts from the bottom of the light tower at Frying Pan Shoals, which is the southernmost point of North Carolina’s Outer Banks. The Shoals have a unique mix of southern and northern Atlantic coastal species, since many of the species here are at their northern or southern extreme of their ranges, and many of them show up on camera! It’s not unusual to see tautog (range: South Carolina to Nova Scotia) on the same day as Spanish hogfish (range: the Carolinas to Brazil). You can also see a wide range of trophic level feeders, from algae and sponge eaters (blue angelfish), plankton eaters (various damsels, herring or sardines), mesopredators (small sea basses, jacks), and apex predators (sharks, rays, barracuda!).

If you’re still in the planning stages for your first (or next!) Parlour Ocean, head on over to the Outer Banks and get a sneak peek at the real deal. Maybe you’ll find some inspiration in designing your own system!