Discussion Starter · #1 ·
How deep soil layer can I use for my 7 gallon walstad tank? Most sources recommend atleast 1 inch which is 2.5cm. Can I use 1.75cm?
How long would the nutrients of the soil last? My livestock poop a lot so that produces some nutrients too. I want it to last around 2 years.I will also add in some root tabs to add trace elements. Would going with 1.75cm have any weaknesses compared to an inch? Thanks!I think you can go 1.75cm.