Ur algae eaters didn't attack the goldfish yet...its their typical behaviour when they are young. When they get older...ur goldfish will look like one big lollipop to them...Yum

The bigger the fish the more vulnerable they become to this suckers.

Get a small 2ft shrimp tank shud be mor ethan enough...i got a 3ft and now i can count so many tiny frys...all pink pink color.

Rubbernose pleco ? If only u are living in US or UK then most probably u can get some Chaetostomas. Here basically no chance at all...one reason, people dun appreciate plecos here.