I've had a 125 freshwater set up before and I've had almost every fish in the line up but this time I have a 135 gallon that I lucked up on for $60 and I want to go with a planted discus set up. My 1st issue is what type of filtration to go with, I've picked the brains of my LFS and one store said to go with two canisters and the other said wet dry. As far as lighting I'm looking to run LEDs which I found on Ebay starting at around $30 and I know I'm going to need so type of heater. If canister is your suggestion for this size tank which would be the best to go with and if your suggestion is wet dry I've been looking to get a Sicce 2.0 or 3.0 pump for the sump, but how many returns would you recommend because I've read that discus don't require alot of water flow? I also need a direction on what type of CO2 set up to go with. Tank mates I would like to go with are, a mix of cory cats, cardinal tetras, congo tetras regular and albino, long fin albino busy nose pleco, galaxy rasboras, a mix of swordtails, and some rainbows, and a variety of shrimp. I've always liked the community set up.