I have a 29 gallon planted tank with sand substrate and kuhli loaches. There are also some Japanese Guppies and otocinculus in with them.
The tank has CO2 and grow lighting, but there are enough plants that even mid day I usually see a loach or two out and about.
I feel like I'm battling between the plants and the loaches, because they love sifting through the sand and cover my foreground plants with sand.
My question is: is there a substrate you recommend for plants and kuhli loaches? I would like to have areas of my tank which are not sand, but won't hurt my loaches.
You might look into some of the ADA product line. When it is new it stays in a pretty nice little compact pellet. Not sure what it will be like after a few years. If you think you want to switch over to one of these materials, do enough research. Many of them need to go through a cycle of their own, because they produce toxic levels of ammonia when they are first submerged. This lasts for about 3-4 weeks. You can plant a tank right away when you switch, but should not add fish until this ammonia production is greatly reduced. This would mean housing the fish somewhere else for the duration.
Happy fish keeping!
Just make sure the gravel is smooth and rounded, so as not to hurt the loaches.
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