You mentioned 65b. If you meant 65g for 65 gallons, then I think that aquarium will be fine for your stocking plans. You will most likely need to create four separate rockwork formations in the tank. Semi peacefull? Yes, I would consider your planned selection to be that with the Socolofi on that semi end. Your Synodontis may turn into the biggest fish issue. They will be in competition for the rockwork and each other. Perhaps just a single one for your tank.
Will you be using a air pump and air lift pump or powerheads on your UG filter pla
Yes a 65 gallon-(typo)the biggest available with a 36" length. I like a longer tank
75/90 gallon but the only place I could put them is being reserved for my 125g. I have 5 formations and using an air pump, commercial grade w/900+ gallon per hour flow. I like the White Socolofi for the color difference, but not "married to it". Good suggestion on the only one Syno and just saved me $15
. Any suggestion on not blue or yellow tank mates? If all goes well will get my 125g out of storage set that up this spring with all South Americans. Thanks much for the reply.