Do I really need to buy?

[gobytron]

Originally Posted by reefwars

I would argue that , coraline algae if enough of it can drop a dKH a day or more it consumes as much as hard corals do , and alot of people run carbon or gfo in a softie tank while yes you can certainly be more sparse on it you still don't want nutrient problems , a fowlr should be treated the same as a reef it's needs are pretty much identical

Coraline will take a long time to form in great enough concentration for it to make any impact on your dkh. In fact, it's not common for coraline to become a problem in tank that don't already dose.

Regular water changes will alleviate any nutrient issues as well along with any toxins softies might secrete.