Hi there First off.. English is not my native, but hopefully that wont be a problem. A few years ago I had a 65 gallon tank with malawi and sadly I had to give it away due to moving into a new apartment. I didnt have room for any proper tanks there :/ But in my new apartment I got room for a new one.. I want to make a South American biotop and thats not something I have done before, so I would love to hear your advice on my little project. The new tank is a 50 Gallon tank. I had a setup like this in mind and I want to mimic Orinoco river Cleithracara maronii mesonauta festivus Panaque sp. L204 Cardinal Tetra (they might be eating by the festivus?) In terms of deco. I think I will go with sand and bogwood along with a few swordplants, maybe a Alternanthera Reineckii pink, to get some other colours than green and maybe abit of Vallisneria or lilaeopsis. I also want a flat stone.. I don't want to have to many plants ofc, becuase it will not mimic real life than. I am uncertain if I should put clay or a product that contains clay below the sand.. since I didnt have plants before in my last tank (it was a malawi tank, so no need for plants ) I would love some ideas about other setups and maybe what I could swap up with the tetras, since again I am abit scared that they will be eaten. Notes - I don't like most of the apistogramma, they are ok, but I much rather have a few bigger cichilds. I heard about Thorichthys ellioti and I like it alot. but it seems to be too big for a 50 gallon tank ? it might be agressive towards maronii ? and most certainly eat tetras I guess.. but would love to hear about them from some of you more exprienced. Any advice on the fish would be nice.