I'm getting ready to start my 20 gallon Walstad tank as well. I'll be following this post closely and hope you don't mind if I ask questions as well for my own build and we can share ideas on this thread rather than starting a new one?
My current regular filtered 20 gallon tank houses for the past 1 year:
3 glass catfish
1 sunset gourami
2 black tetras
2 rainbowfish (I believe that's what they are but small variety no more than 2" max size)
2 Harlequin Rasbora
1 Bristlenose Albino Pleco (He's about full size 4.5-5" already, but I know I have to get rid of him and will not be putting him in new Walstad tank)
So I know I'm maxed out on my fish, and like I mentioned I'll be getting rid of Pleco but I really don't want to get rid of the others. I have a small 5 gallon tank in the attic was thinking of turning that into a Walstad tank as well for my daughters room, but can I put any of the fish from above in my 5 galloon to help offset the load on my 20 gallon?
New Walstad 20 gallon tank (16" tall x 24" wide x 12" deep) will include:
*2 - 20 watt flood LED lights 6500k (I just bought these https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
*1 - Penguin Bio-Wheel 150 (No filter going to use only Bio-Wheel or should I not use that? Using just to have some water movement)
I'm looking to put down 1.5" layer of Miracle-Gro Organic soil, 1" layer of Monterey beach sand on top of that. My question though is won't the sand be dangerous for the fish? Could they possibly eat the tiny sand and chock or get it stuck in their digestive system? Or should I not worry?
I like the list of plants you have and may follow you on that just because I have NO IDEA what plants to start with because of the million threads I've read and everyone mentions something different lol.
Looking forward to seeing and sharing pictures of this new adventure! Feel free to reach out to me anytime. GOOD LUCK!