Aquarium Care and EcoBio-Block

One of the biggest challenges for aquarium owners is an outbreak of single celled organisms called cyanobacteria. They are casually referred to as blue-green algae because they are typically bluish green in color (although sometimes black or red) and aquatic; they are, in fact, microscopic bacteria that, when prolific, form into shiny sheets that look like algae.

Cyanobacteria also act like algae because they create their own food through photosynthesis. Given enough light and nutrients in the water, cyanobacteria can cause a bacterial bloom that can lead to major problems in the aquarium.

A cyanobacterial bloom may be free-floating greenish brown particles that make the water look hazy. The bacteria may also colonize into ugly films of slimy looking growth covering rocks and plants in the aquarium. Uncontrolled, a bacterial bloom can gather into foam or scum on the surface of the tank and give off a nasty rotten smell. At any rate, the proliferation of cyanobacteria is an indication that the nutrients that feed it – organic matter and waste products – are excessive in the water, which can only mean that the fish are in grave danger.

Cyanobacteria problems can be prevented with good fishkeeping conditions and attentive maintenance. In the event that a cyanobacterial bloom occurs, several steps can be taken, the first of which is to reduce the amount of light exposure in the tank. Because cyanobacteria thrive through photosynthesis, depriving them of light curtails their growth.

Together with reduced lighting, an effective way to fight cyanobacteria is consecutive water changes. Water changes up to 20% every three to four days will reduce the concentration of phosphates and waste material that feed the cyanobacteria. Test kits for nitrates and cyanobacteria are helpful in determining when healthy levels have been achieved. And to prevent future problems, it is best to maintain the aquarium with just the right number of fish, highly efficient filtration, and no over-feedings.

At times, though, cyanobacterial bloom can be unrelenting enough to defy light deprivation and water changes. Some fishkeepers resort to antibacterial chemicals, which could be equally detrimental to fishes and plants. A greener, more eco-friendly solution is the EcoBio-Block Family Products, originally designed and currently being used to degrade toxins and pollutants from lakes, streams, and reservoirs in many Asian countries.

EcoBio-Blocks, EcoBio-Rocks, EcoBio-Stones, and EcoBio-Pebbles are porous, mineral-rich volcanic stones from Japan. They are embedded with prolific beneficial bacteria (“bacillus subtilis natto”) that can actively multiply every half hour into colonies that degrade organic matter and nitrify waste products in the water. Because they degrade the organic matter that feeds cyanobacteria, the internet radio show Pet Fish Talk feels strongly that EcoBio-Block helped clear up their cyanobacteria problem. (click hear the Special Pet Fish Talk titled “Cyanobacteria”)

Cyanobacteria cannot be totally eliminated from the aquarium. Overgrowth and its toxic consequences, however, can be prevented with optimum water conditions through diligent aquarium maintenance together with proven eco-friendly solutions like the EcoBio-Block products.

It seems that I begin many of these letters by quoting from some correspondence. After all, what better or more practical source of inspiration can there be? In this instance, the point is one that is brought up rather frequently by beginners in aquarium care, who have not been very successful after having seemingly followed the primary instructions gleaned from books or our dealer friends. They give recommended foods in conservative amounts, have good light and temperature control. But here is where trouble starts, through the acceptance of a fallacious signal as to what constitutes “overcrowding.” The signal watched for is when the fishes gasp at the surface of the water, “blowing bubbles.”
That is a carry-over from the days when goldfish was King. Goldfish and other cool-water fishes are very sensitive to any shortage of oxygen in the water, or the presence of too much carbon dioxide. They quickly express their distress by breathing at the surface. Incidentally, I have often wondered how fishes, never before in such a situation, know enough to get a fresh supply of oxygen at the surface of the water.
Warm-water fishes are better equipped to get along in oxygen-deficient conditions. In a tank containing both goldfish and exotics (a combination not recommended) the goldfish will invariably be the first to register discomfort from overcrowding. The point that I am stressing is that “Tropicals” are apt to “suffer in silence.” When they come to the surface and stay there, conditions are not merely bad, but very bad. Undetected crowding has been present for some time past, indicated by the poor condition of the fishes. Of course such symptoms can come from other causes, but crowding is one of the first to look for. That suspicion can be confirmed if frequent partial changes of water relieves the condition.
Water changes help keep the parameters within acceptable limits, help remove excess organic material such as waste and uneaten food, and also replenish required minerals in the water that the fish use up over time. If you prefer not to do as many water changes or are physically unable to, there are alternatives that can reduce your labor. My favorite is the EcoBio-Block, which is an aquarium care product that introduces beneficial bacteria into the aquarium (which keep the biological filter healthy) and slowly leach necessary minerals into the water to keep fish healthy and help beginners become successful aquarists.
Advising a new aquarist at the height of his frenzy to go slowly in building up his tank of fishes is like talking against the tempest. Recently I fitted out a grandson with an aquarium and a suitable collection of fishes. All was lovely for a few weeks until he was bitten with the desire for more and more.
The dealer could not be blamed for selling to him, but the result was not hard to foresee – a general attack of “Ich.” Overcrowding does not necessarily cause that disease, but reduces the vitality of the fishes so that they are more subject to it.
The elder Rothschild is credited with the wise crack “Nobody ever got poor taking a profit.” I would paraphrase that in reverse: “No aquarist ever got into trouble by having too few fishes:”

Aquariums are wonderful additions to any home, but problems can arise from the fact that essential life functions within the aquarium are facilitated by electricity - namely, oxygen and temperature regulation. Strong winds, lightning, falling tree branches and floods can all cause unexpected power outages, and in small towns or rural areas even automobile accidents that involve power poles can plunge households into darkness as the only means of electricity has to be shut down. Here are a few tips on how to safeguard your beloved aquarium in the event of a power outage.

The most important thing to keep going in the aquarium is the oxygen exchange. Beneficial bacteria in the tank require a lot of oxygen, so once a filter and aerator stop working the dissolved oxygen depletes very quickly. Once oxygen is depleted the bacteria colonies begin dying off or becoming inactive, allowing ammonia levels to rise. Hardy strains of bacteria such as the bacillus subtilis natto strain used in EcoBio-Block will mostly become inactive, but return to actively breaking down ammonia as soon as proper oxygen levels are restored. This can happen within an hour or two of losing power, depending on stocking levels. Additionally, a lot of beneficial bacteria lives in filter media so if you have a canister filter or HOB filter that keeps the media out of the main body of water a large portion of the aquarium’s bacteria may be unavailable instantly.

This is where planning ahead can be a real lifesaver…and back saver! If your power goes out and you don’t have a generator, having all your aquarium equipment plugged into an uninterrupted power supply is possibly one of the best ways to keep going for short-term outages. Battery-powered aerators are available online and in many pet stores as well and can be a great asset during outages or when travelling with fish. If none of these are available, you can manually facilitate oxygen exchange by filling a pitcher from the tank (here’s where the back comes in) and dumping the water back in, then repeating at regular intervals until power comes back.

Now for temperature control; in cold weather, a watertight container filled with boiling water (provided you have a gas range or access to a wood-burning stove) makes a great heater that will keep fish near it warm. In hot weather, a water-tight container or two or three ziplock baggies inside each other (to prevent leaks) with ice cubes in it will keep water near it cool enough for the fish.

If the power is out for extended periods of time you may have to watch the water parameters closely when the aquarium is functioning again as a lot of beneficial bacteria can die from oxygen deprivation, causing ammonia spikes. To control these you’ll either need to do water changes every day to keep ammonia levels down until the bacteria catches up again, or you can add some new bacteria from products such as EcoBio-Block or BioSpira. BioSpira is a bottled bacteria culture that works well, but has to be refrigerated and has a limited shelf life so it may not be the best for emergency preparation. EcoBio-Block is a water maintenance product that lasts about 1 1/2-2 years in the aquarium; this product introduces and promotes the growth of beneficial bacteria as well as keeps the water parameters healthy, which can reduce fish stress in an emergency. EcoBio-Block is a very valuable maintenance product that will keep the aquarium water healthy every day in addition to emergency uses, but it can take up to a couple of weeks to start working initially so it should already be in place to be effective in an emergency.

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