I currently have 8 young 5-8cm L14 sunshines and a L002 tiger in my ~400L tank (140cm long, 65cm wide, 48cm high), along with a 14cm L128, 10cm L81, and a 10cm and 6cm L190 being looked after by a friend. He's thinking about doing a rearrange on his tanks so I'm thinking about taking the opportunity to get my plecs out while he's moving things around (mainly because I miss looking at them, he's happy to keep sitting them). How long do you think I could get away with this many plecs in the tank? Its got a good footprint (140x65cm), well filtered (sump plus Eheim 2224 canister, and I have a spare FX5 just in case!), plenty of hiding spots and regular water changes. The only other fish are 5 small Satanoperca and a school of lemon tetras. Obviously I know it will be pushing it, but we are in the process of looking for a section on which we can build a house, which will include another large tank of at least 1200L (that was one of my conditions of selling my old 1400L before we moved!), so at the most they would be in the 400L tank for another 12 months.
My head says leave them where they are, but my heart says go get them!
