I just finished making myself 3 covers for my 180g. I got the net from my cousin but you can find it at a gardening center. I bought the rest of the material at home depot. It only cost me $23.00 total. The corners are $1.98 per pack of 4. The spline cost $3.98 for 25 feet and the Screen Frame cost $4.25 each per 7 foot length. It took me about 20 min too make all three because I use a hacksaw. Very easy to do. I can make them for you if you buy the material. I have extra net. The only problem I live in Queens. LMK