- Joined
- Apr 8, 2019
- Messages
- 218
- Reaction score
- 190
- What state or country do you live in
- New Hampshire
I have a 20L with a 10 gallon sump/refugium. Tank has been set up since March, since setting it up I've always seemed to battle low Kh. Using API test I'm usually around 5 drops. I dont have a lot of corals in my tank.
I was wondering if I can use seachem reef builder in my ATO water? And if I can is there an easy way to figure out how much to mix? I fill my 5 gallon ATO about once a week.
I was wondering if I can use seachem reef builder in my ATO water? And if I can is there an easy way to figure out how much to mix? I fill my 5 gallon ATO about once a week.



