Using Kalkwasser Paste To Stunt/Stop Growth

[Ty Hamatake]

Another thing that works is a stainless steel "toothbrush". There are a number of sizes on Amazon. https://www.amazon.com/gp/product/B000NM3PSE/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

A few brush strokes will scrape live tissue off. Unless the coral has real deep grooves or pores.

The rock is bowl rock and just so happens to have TONS of little nooks and crannies... the brush may still be my best option though. Thank you!