Hello all I have always wanted to have a fish tank and recentely decided to just get it. I purchased a 40g glass tank picked up a fluval 304 canister filter. A friend of mine said that canister filters are the best way to go if I ever want to add plants. I am new at this and not sure if I want to add the plants because I will then need to get a CO2 system and they are prett expensive. My friend said that I coud do a DIY system like him but he is having huge algae issues. What should I do about substrate man its expensive? Found a site that sells a five gallon bucket for 44.99 plus 22.00 for shipping is that good or could someone tell me where I can get some for cheaper locally?