Thanks for the imput, after talking to the owner and thinking about things, I did end up getting them. I plan on planting my 40 when the eel grows out of it. So they are currently settled into my 20H well planted tank with some cardinal tetras and cherry shrimp. They where more 3" if that. just looked bigger in the shops tanks lol. So in the next 6 monthes I will be re-doing the 40 and they will be xfered over there. first night in the tank they where actively scavengeing off the driftwood and looked very content. One hides abit more then the other but they are both the most active plecos i've had in a long time! I also didn't want to chance them sucking on my eels slime coat or my eel bullying them though he's been very docile with his other tankmates.