I do not consider myself an authority on the matter but i want to share whatever knowledge I've acquired when it comes to algae and how to fight it.
Some of the techniques mentioned here have worked for me, but if someone have a different way, by all means use it if it works for you.
But that does not mean we are powerless, while 100% free is impossible, keeping it under control is quite possible, if you know how.
Algae are simple plants that range from microscopic (Microalgae), to sea weeds (macro algae).
They can be grown in almost any type of water, from brackish to seawater or from freshwater to waste water.
Basically if there is water, there is bound to be algae.
However in nature there is a balance were algae and plants are part of a natural ecosystem, in our aquariums that is not so easy to achieve and the hobbyist normally faces a hard time trying to keep it.
When I say trying to keep the balance is because literally, that's what it is.
Some algae is actually sign of a healthy planted
tank, the problem is that when it's too much it makes your tank ugly to look at, and
ultimately can damage your plants.
The problem is as multi-celled complex organisms, plants need a balanced supply of these three to grow, while the simpler single cell algae do not, they can thrive on whatever they can find.
Most of the algae problems are co2 related.
They are caused due to not enough, or inefficient supply.
Thus we should avoid variances in co2, by keeping a constant and steady supply.
To do that a good flow around the tank is needed, this will make sure that co2 and nutrients get where they are most needed, the plants.
So a lack of good flow can also be the reason for algae , because it will cause an inefficient distribution of co2 and nutrients.
Dosing in excess, making sure your plants have a steady supply of nutrients, makes sure that they never run out and not only prevents algae, it promotes healthy plant growth.
If anything is the lack of any given nutrient that can trigger an algae bloom.
Excess nutrients only becomes a problem if the tank is unbalanced with algae already present.
But in the end most of the times it all comes down to CO2.
Bad tank maintenance is another reason for
algae, dirty substrate, too much organic matter in the water, or a dirty filter
are known to cause ammonia spikes which in turn bring about those dreaded algae
blooms.
Another more less known cause for algae is the presence of too much silicates in the water, this one often explains our brown algae blooms, this can also happen in thanks that use sand as substrate.
However there is a wide debate amongst hobbyists if this is actually the case.
So to keep algae at bay you need to keep your tank balanced, but when you get them there's always some ways of trying to get things under control.
Here are some steps that can help fighting off an algae problem:
As a first step, cutting down your light is a
good idea, this way you are slowing
down things in the tank, including plant and algae growth.
It wont get rid
of it but will slow its spread and give you time to do
something to fix it.
If neither of the above is an option, adding some floating plants will help shade the tank.
This is called using light as the limiting factor.
Please use a drop checker to avoid overdosing, and increase it slowly over a larger period of time. The goal here is to kill algae, not fish.
While it is unlikely to have and excess when dosing EI while keeping up with your water changes, not dosing enough, or dosing an unbalanced amount can be just what your algae are waiting to thrive, remember algae take up anything your plants do not.
Overall i rather want to see healthy plants, even if there's some algae then unhealthy ones.
So make sure you are dosing enough of all the nutrients required in sufficient amounts.
Adding a powerhead, increasing the output of your filter if possible will help do the trick.
Sometimes just playing around with the placement of the pipes is enough to help.
I have a blog post that looks into the Importance of flow in the planted aquarium in detail, feel free to check it out.
Step five is to increase your water changes.
Water changes helps get rid of any excess
amount of nutrients and resets your tank.Make sure to give a good clean to the tank, a clean tank is a healthy one.
Also make sure to remove damaged or dead leaves to prevent ammonia spikes.
Step six is to manually remove as much algae as possible.
This can be done by vacuuming it out or removing by
hand.
When it comes to hardscape and equipment brushing it out with a
toothbrush normally does the job.
Also remember to clean the glasses, for this use a glass scraper,
an old credit card will do the same for free.
Step seven treat the tank using seachem flourish excel or
easy carbo, while these two are sold as liquid sources of co2, they are known to be effective at killing algae.
You can dose the entire tank, or for more resistant
patches do a spot treatment.Just remember to shut down all filters and powerheads before you do it.
I'd like to thank Dave from ADUaquascaping for his videos, specially the one where he taught me this little trick.
Hydrogen peroxide is amazing at killing
algae, and the best of it ,it's mostly harmless to your tank, once in the water it
breaks down to its original constituents which is oxygen and water.
Just do a spot treatment, but remember to
shut everything off.
It is important to add that some plants like carpets tend to get damaged if peroxide is used heavily, also do not use hydrogen peroxide in the presence of shrimps as if they graze on the treated area it will kill them.
If you want to use peroxide I recommend spot treatments and remove any shrimps before use.
Fish don't seem to be affected.
If you want to use peroxide I recommend spot treatments and remove any shrimps before use.
Fish don't seem to be affected.
There's only so much junk your filter can clean, absorb and keep it in itself, when enough is enough it will start leaching ammonia back into your tank.
Ammonia that in turn will cause algae.
If you increase the amount of plants in the aquarium by adding fast growers you are increasing your plant mass, eventually they will outcompete and starve the algae of nutrients which in turn helps you balance your tank.
If these plants are not part of your planned scape you can always take them out once the tank is stable.
Step eleven is to add a cleaning crew.
While i don't approve of basing your algae
control solely on live stock, i do believe they can be put to good use when together
with the above algae control techniques.They cannot clean a tank overrun with algae by themselves, but they help getting rid of those last patches, or at least to prevent a small patch of algae to become a big one.
Algae eating shrimp and fish where made popular
by takashi amano himself, so who i am to say it does not work.
Just don't put your all your chips in it
when it comes to keeping your tank free of algae.I have grown to believe that all planted aquariums should have a cleaning crew planned from the start, as they are useful at keeping the tank clean, which in turn helps prevent algae.
Future blog posts will go into more detail into specific types of algae.
Sources:
Wikipedia
UKAPS article on dry salts
James algae guide
Many years of fighting algae
Other blog posts:
Aquascaping layouts
High-tech vs Low-tech
How to grow aquarium plants
Aquarium filtration
Aquarium maintenance
Assembling a nano nature aquarium
My experience with scapetour
Scapetour and florestas submersas
The Nature aquarium aquascape
The Iwagumi aquascape
The dutch aquascape
The jungle aquascape
The biotope aquascape
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