Discussion Starter · #1 ·
Has anyone had luck with adding peat to penguin bio-wheel filters? I havent found any empty cartridges to add peat to designed for them. I need to soften my water as R.O. isn't as readily available as I need for all my tanks. My tap is liquid rock (8.6-9.0) and I really would like to soften it in my planted tanks. Any advice would be appreaciated.