I am pretty experienced with salt water aquariums but i now want to venture to a koi pond. Im thinking about a 7 by 7 ft pond 3 ft deep and a watterfall maybe a foot higher. What size liner would i need and what other equipment would i need. I dont want the best equipment not enough $$$ but something good so please mention brands. Also would you recomend a regular filter or a pressrized filter. What is the difference?
Thank you