Hi. I'm Planning to build a tank of the dimensions 12L X 6H X 5W (Front 30 mm Glass and the sides and the back will be Concrete) holding approximately 2600 gallons. I will house a Silver Arowana (probably add one more later), 4 Oscars and Plecos in this setup. I'm from India and I can't find professionals who i can approach on help with filtration and heating for this setup. Please help me with your valuable suggestions. Thanks in Advance. Cheers.