Yep I clean the front of the tank, but not the sides and the back, I think I read that article somewhere as well They cost about 15 to 19 dollars NZD, but they end up costing a long more if you include the fatalities that happen, I started with about 8, but they've dwindled to about 4, and I'm thinking about getting some more. They're tricky to get here, cos I make sure they've had them in for more than a month in the tanks, to account for the deaths they have with all the new stock. None of the otos I've ever have ever bred btw, have you had any luck with yours?
Cool 8.99 canadian becomes 12 dollars here so it still ends up being cheaper than NZ, but thats the price you pay for living close to the south pole 8)