Sand Vs Gravel? Yes, this conversation again. Lol

I prefer gravel and will never change to sand, the big advantage with gravel is that you get water movement through your substrate, which doesn't happen as easily with sand. I also like the fact that if your fish spawn the fry have somewhere to hide, so the chances of raising a few youngsters is increased. You are not interested in plants but live plants do better with gravel than sand.
How do live plants do better in gravel?
I think your gravel looks really nice in your tank but I feel it limits stocking. I would never put any corydoras species in there or other pleco/catfish that like soft substrates to dig around in.
 
How do live plants do better in gravel?
I think your gravel looks really nice in your tank but I feel it limits stocking. I would never put any corydoras species in there or other pleco/catfish that like soft substrates to dig around in.
Most aquatic plants just use their roots for support and have very delicate roots, those roots find it easier to grow through gravel.
As for the Cory thing I have pygmy's spawning in my tank at the moment and because I have gravel I know those fry will have somewhere to hide and that the mulm that is in the gravel base will give the fry the first food that they need.
 
Just to add to that last post. I have Black Phantom Tetras spawning all the time and those youngsters get protection from the gravel base and fed from the mulm that accumulates in it. My population of those fish has gone from 10 to 30 in less than year. With no extra feeding.
 
I suppose if the mulm builds it offers a soft substrate at the bottom for them! Brilliant!
 
This is what my base looks like under my Crypts, the fry hide in the gravel and the mulm.
20220911_162955.jpg
 
I still feel like you are taking a natural ability away from the corydoras... They do filter feed and enjoy sand. Not to say you can't have some gravel in a tank with corydoras but I would be careful. Its just one of their things they do and I see no reason to rob them of it.
That's my personal opinion though. You have all the control to your tank to say what they will receive and wont.
 
I still feel like you are taking a natural ability away from the corydoras... They do filter feed and enjoy sand. Not to say you can't have some gravel in a tank with corydoras but I would be careful. Its just one of their things they do and I see no reason to rob them of it.
That's my personal opinion though. You have all the control to your tank to say what they will receive and wont.
Have you seen Corydoras filter feeding as you put it.
 
In Fred Betta's aquarium I have just Hugo Kamishi fine glass substrate.

In the main 53 gallon aquarium (where Cories lurk in abundance amongst other finned hooligans) I have mixed Hugo Kamishi natural sand with Hugo Kamishi fine glass substrate. I say "mixed". I didn't do the mixing, that was - and still is - all down to the Cories who constantly move the substrate to suit themselves and to heck whether it is aesthetically pleasing or not to their human keeper (me).


(Before any sharp intakes of breath at the thought of glass substrate.....the individual beads of glass are 1mm to 1.5mm in size, rolled glass so no nasty edges)
 
Ok, Now go and look up the definition of filter feeding fish and mammals. What is filter feeding? I say that Corydoras does not fit into that category
I'm saying it loosely. I don't know what else you want me to call it. They bring in mulm/sand into their mouths, keep the food and then the sand and mulm go out of their gills
 
I'm saying it loosely. I don't know what else you want me to call it. They bring in mulm/sand into their mouths, keep the food and then the sand and mulm go out of their gills
Really, you believe they are that clever?
 
If you think my theory about gravel being better than sand is incorrect that is fine here is another baby Black Phantom, growing up in my tank with 6 inch Discus and no extra feeding.
20220911_171835.jpg
 

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