Discover how misunderstood the concept of cycling your fish tank really is. In this video, Father Fish explains why your aquarium starts cycling the moment you add water and why the traditional idea of waiting weeks before adding fish is often misunderstood. He shares how a planted aquarium, deep substrate, beneficial bacteria, and balanced stocking work together to create a healthy, stable ecosystem.
Learn why adding fish gradually, using live plants, maintaining biodiversity, and supporting natural biofiltration are the real keys to long-term aquarium success. Father Fish discusses fish-in cycling, natural aquarium methods, low-tech planted tanks, aquarium startup mistakes, and how the nitrogen cycle actually works inside a living ecosystem rather than a sterile tank. His method focuses on deep sand beds, mulm, detritus, microbial life, and ecosystem balance rather than relying only on bottled bacteria or constant water testing.
This video covers aquarium cycling, nitrogen cycle, fish tank cycling myth, planted tank setup, freshwater aquarium care, beneficial bacteria, aquarium substrate, deep sand bed, fish tank startup, natural fishkeeping, aquarium ecosystem, bioactive aquarium, live plants, community tank balance, fish tank stability, low maintenance aquarium, beginner aquarium tips, biological filtration, mature aquarium, and sustainable fishkeeping. 00:00 - Introduction: Fish on Day One 00:18 - Redefining Tank Cycling 01:45 - Avoiding Crisis: Go Slow with Nutrients 02:38 - The Power of Plants & Gradual Fish Introduction 03:36 - Balancing Over Cycling: The Fish-Plant Dynamic 05:05 - The Continuously Strengthening Ecosystem 06:08 - Lessons from Depletion: Maintaining Established Tanks
Lou Foxwell adopted the role of Father Fish many years ago when he opened a tropical fish store as a retirement business. Prior to this, he served as a missionary for 25 years, following in his father's footsteps by ministering to a congregation of deaf worshipers. Lou fondly recalls his grandmother from Berlin, Germany, who inspired his love for fish keeping as a child. As a founder and original board member of the National Aquarium, Lou played a significant role in its development, serving as chair of the Community Relations Committee and participating in hiring the first Director of the Aquarium. With experience across nearly every level of the fish industry, Father Fish offers a wealth of knowledge and products, including plants, soil supplements, and more, to enhance your aquarium experience.
You have to have fish in that tank day one or day two.
Welcome to father fish and the natural aquarium.
The word cycling is badly misunderstood.
A tank is not cycled and done.
Cycling begins the minute you put water in the tank.
It begins instantly.
So in one sense, the tank is already cycled.
It's simply cycled at a very, very low level.
In other words, it's consuming, let's use the word calories.
It's not wholly appropriate, but you'll be able to understand what I'm saying better.
You have enough process, enough bacteria in there to consume maybe 50 calories.
So if you put 100 calories in, that bacteria will do the 50,
and then it's going to struggle to do the next 50.
It'll get there eventually, but before it gets there,
if there is an abundance of excess nutrient, that will begin to suck the oxygen out of the water
and cause any organisms living in there that are oxygen dependent to struggle and perhaps to die.
So by putting in more nutrient, more fish that create nutrients for bacteria,
more food, more, even more leaves, more nutrients.
If you put more in, that can be handled by the very small amount of bacteria
that's already there, you can create a crisis.
So what you want to do is simply go slow.
You can treat the tank as if it is cycled from day one.
That does not mean that you throw 25 fish in the tank.
What it does mean is you put 25 plants in the tank
because the plants will absorb very quickly much of the excess nutrient that gets in there.
So the more plants you have, the more rapidly you can move forward.
If you fill the tank up with plants on day one,
you can put a half a dozen small fish in that tank,
and then day three or four, another half dozen.
Now in truth, you could do a few each day.
I tend not to do that because I tend to be more conservative.
You don't need to be.
You can test your limits.
You can do one, you can do two, you can push it a little bit.
If you see the fish stressing, then you need to back off.
So it's a matter of being patient, of being systematic,
of building the system gradually and doing it slowly.
You're not in any big rush.
There's no big rush to do this.
It'll get there all by itself if you just give it the time to do it.
What you do need to do is get fish in the tank right away.
You have to have fish in that tank day one or day two,
because the plants depend upon it.
Now they don't need a lot, but they need something.
If you have no fish in there, nothing creating carbon dioxide,
the plants will struggle.
So balancing is more important than cycling.
By balancing, by creating that balance between plant and animal,
always realizing that the more plants you have,
the more animals you can put in the tank.
So by loading up with plants, you can begin putting fish in.
Again, you want to put them in gradually.
Don't put a whole bunch in all of a sudden, all at one time,
because you probably will have a problem.
Now you may have tried that and it may have worked.
And you may have just been fortunate that everything kind of worked together
to keep it going.
I don't believe it's worth the risk.
I would much rather go slow and watch that system develop and grow and build,
because it will get stronger and stronger and stronger.
They never stop getting stronger.
The tank will always develop.
It will always be improving.
It never reaches a state of absolute perfection.
It is always growing, always improving, always strengthening.
I've got a 27-year-old tank here.
It's been set up 27 years.
It is stronger today than it was a year ago, visibly so.
It just kind of amazes me how the tank doesn't deplete.
It simply continues.
Now, there was a point about 10 years ago where the tank depleted.
And that's because I was using it as a mother tank
in order to be able to grow plants and sell them.
So I was selling plants that were growing in that tank and depleted.
I sold virtually every plant with plant new ones.
In the process of doing that, I pulled out all the nutrient foundation.
In other words, I removed a major leg of the food web.
And the tank struggled then to be able to provide nutrients to new plants coming in.
It eventually pulled out.
It took a few months, two to three months.
And it was caught up and it was able to be just as strong as it had been.
But you can short-circuit the process by taking a whole lot out and not replacing it right away.
Or simply by taking it out because everything in there is grown into
and is a functional part of the system that's developed.
So you can take one whole type of plant out, put a different type of plant in,
and it won't function the same way.
The tank will withdraw.
It'll collapse a little bit, maybe a whole lot.
Typically not, but it could.
So you want to be careful about what you take out of a well-established tank.
Do it piecemeal.
Do it a little bit at a time.
But whatever you take out, replace.
