I have a leaky 77 gallon that I don't see me fixing any time soon. So today I got the idea to fill it up just under the leak (about half way) and divide into six or eight sections for male bettas. I would like the material to be cheap if possible. 

kveeti said:Silicone the flat side of report cover spines to the glass. Like these:
http://www.jam.co.za/products/Stationery/bantex/bant report covers.jpg