- Joined
- Sep 21, 2018
- Messages
- 6,675
- Reaction score
- 7,170
I think trace copper will not interfere with bacteria growth.@Dan_P can you let us know if you feel that prior copper treated substrates would affect nitrification testing. I wouldn't think the old rocks would, was mainly concerned about the actively-dosed system altering the reading.
lots of people reef with prior copper rocks and can't keep snails, but their biofilter works and that's our aim here for study.
Last edited: