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I wonder what happens when there is no more space left on the surface to spread out?

I heard that duckweed is originally fast to multiply. - From Korea

Or add a lot of plants

I had duck weed & some other pond plants that grew tall stemmed flowers, In a tall 20 gal tank It sat in front of my bedroom window for over a year until literally today That way is some how super clear Idk how cause there bunch of plan decay on the bottom top of way was completely covered in duckweed I never put a filter or air stone or anything

Hi Jays, how are you? I would like to change some ideas with you. Where we can chat and share ideas? Thanks

Wonderful experiment. Thank you... I am aiming for this but with my 2 2 month old axolotls...my question is..what else can I feed my duckweed to survive and be healthy? I have no substrate, no other plants and only 1 snail at the moment..

Also: O2 has low solubility in water, because it is a nonpolar molecule in a polar solvent.

I've run my tank like this for 4 or 5 years. Just occasionally remove excess duckweed. One thing you will run into is snails will be unable to build shells properly once they have consumed all the calcium & stuff from the water. So might have to suppliment that if you care about snails.

Love the experimental approach you are taking in the hobby. It is surprising to see we share the same methods to avoid/minimise water changes in marine too (i.e carbon dosing, deep sand beds)

Hi, did you wash the sponge filter?during that period of time

Who are you❤❤❤❤❤❤

You are a life chanegrr❤

Run gone tell that U are the best

This video was so helpful! I know its old, but thank you! I have a question if possible.. what if bubbles that have the slight sulfur smell come in contact with your fish? Like they swim through it when it happens?

I think the gravel performed better likely because the water could move easier through the media. The effect can be super charged by adding a little flow to the water and even more by adding a plenum under the substrate. Doing so might show that gravel doesn't do as good only because of too much oxygen flowing through it.

In marin tank ?Mangrove doing ?

LOL! This is absolute instantly! I love it! Thank you and your neons for this experiment!

I think we have overwhelming evidence now that sufficient plant growth will make water changes unnecessary. This proves the point yet again - follow the data

Bro your channel is amazing you are the best fish tank experimental youtuber 🎉

Some plants would have worked wonders for nitrates and nitrogen compounds - I'm surprised you don't have ammonia, nitrite and nitrate issues without plants as part of the natural filtration process

I'd like to run a test 10 gal tank I just made with just substrate to a 10 gal with a layer of soil and and capped with 2" of sand have No plants and just a airstone and I just tested the cloudy water I got and the ammonia level is about .50 ppm, nitrates about 20 ppm. If I have the bacteria to convert ammonia to nitrites , nitrites to nitrates and I have some anaerobic present in the soil to convert nitrate to nitrogen gas then at some point shouldn't there be no nitrates , nitrites or ammonia in the water. if that happens then I'll add some fish food to the tank to get converted and go to zero again also expect any hydrogen sulfide h2s to be converted to sulfate so4 by the o2 added or am I missing something...thx

The water is still having gas exchange at the bottle folks this method is fine. So chill

Thank you

Or a passive stand alone large pond basket in the aquarium with porous media. Most of the internal media will be anoxic

An update! Thank you so much for posting and explaining in great detail your tanks. I followed your instruction and havent changed my red eared sliders water in 4 years! Does this tank also have deep substrate on the bottom of the tank or just in the bags?

I was glad to see that you made a new video. Sorry, you added background music. I'm not ready to endure the drum beat on my brain. Left after 35 seconds of this bullying. I wish you a successful, easy move.

Wow, you too, huh? They gave me a month's notice cause i flipped when my ptsd got retriggered, maintenance man walking into the apartment without knocking when he's not even supposed to be there yet, don't even know if i'll be able to keep the aquarium. TURTLE EGG!

Jay it had been more than a year did not see any upload from you. I glad that I had learn to build a no water change turtle tank and learned most of my aquarium knowledge via your channel, thank you very much. I hope you are doing well and I'm looking forward to your new videos.

Does your tap water have chloroamines? If so, is it because the water coming in is so slow that the system manages to break it down?

Nice video, very informative to confirm that duckweed works for no water changes. I have duckweed in my 400L tank and it is really good at balancing nitrates. Most of the time it just grows steadily and slowly fills up the surface of the tank. When something happens it quickly responds to this. One example is when 4 mussels died at once, I was alerted because the complete surface of the tank got filled up with duckweed within a few days. apparently a big nitrate spike happens when these die. Second example is when the bioload is higher the duckweed fills up the surface much faster. I had about 25 guppy fry growing up, together with about 300 shrimp, every month the duckweed would grow back faster. I gave away most of the guppies and about 100 shrimp, then it started growing back more slowly.

hello jay may i ask what is the best media for fluidized/moving bed filters ? k1 micro k1 or bio ball ... ?

I have done the same thing 👍👍

I have a planted 40 gal Guppy tank with about 50 adult guppies and removing scoops of duckweed periodically is my main form of nitrate control too!

How often did you feed was the sponge cleaned at any point

Can I ask how often you cleaned your sponge filter during this year?

WOW this is the most useful thing I ever found in this hobby, I tried to learn HOW TO KEEP FİSH ALİVE from everywhere but this is the way yeah. Thanks

would lava rock work?

This is very well done. Good job and thank you.

Hi Jay, 1 week ago set up a dirted 5 gal tank with 1 inch of soil & 2 1/2 inches of sand. I have about 50% plants, ...stem & column feeders. I am running a hob filter with a media cartridge. A small light under the hood of the tank. My question is should I use the hob filtration while I wait for the tank to cycle or is it better to cycle without any filtration? I have watched all your basic videos on filtration ...but am still stumped here. Thanks for any help you can give. Or does it make any difference either with or without filtration?

Thank you so much Jay. I am starting a dirted 5 gal tank that I eventually want to put some Cherry shrimp in & I need a simpler way to understand the basics of fish keeping. So many other videos on TH-cam are too confusing for me. FINALLY someone who can make it understandable! 😂

Such a neat experiment. Do you have any ideas as to why the nitrates spiked at 8 months on your graph?

I think neons die just because they are neons. I've never had luck with them no matter how much I tried...

Did you add music? It was better without music. Your material is awesome otherwise.

So sacrifice. That is the bests experiment.

this sounds like a trick question in exam. people usually assume each fish received same amount of food instead of both tank received same amount of food

Duckweed is a blessing from Aquarium God

Excellently explained 👌

Perfect, thanks for the research and expirement. Perfectly answers some of my questions on the power of floating plants in aquarium

Great video, how long do you leave the light on?

Hola. En México se esta haciendo esta cama profunda desde el sump. Te comparto el enlace. Muchas gracias por tus excelentes videos. ¿Tendrás videos donde lo que aquí explicas se vea de forma ya aplicada? Saludos desde Guadalajara, Jalisco, México. Un abrazo fraterno. th-cam.com/video/LXuehEwcAAY/w-d-xo.html