I have a new 125 gal
tank that I'm currently doing a fish less cycle in with only base rock and regular aragonite sand (not live). I've been dosing ammonia to 4-5 ppm
as needed and my nitrite has been sitting over 5 ppm
for a few weeks now, nitrate is around 10.
I'm not in any hurry, but was wondering if placing some of the filter media from my established 37 gal
reef into my new sump would be a good idea to boost biological diversity? I've had my share of algae and cyano
outbreaks in that tank which I'm trying to avoid in the 125 by using base rock that I would rather not introduce.
Would using that media increase the chances of transferring the bad stuff into the new tank?