Recent content by Northern Soul

Many thanks for the replies, my pH is 6/7,the 4 was my mistake I need to go back and edit.

Hiya all, After a 25 year absence of owning a tropical tank, I've jumped back in, in that absence I've continued keeping Koi in my garden pond, but I've recently purchased a 60l nano cube, that's been up and running for a couple of weeks. The scene has changed slightly since I last kept...