My N03 had been declining, naturally, for a month. Last week, after several fish decided to play in the substrate, and kick up a sandstorm, I added a berlin sump sock to filter out the tiny particulates.
Within a week, my NO3
started climbing, from 3 or 4 ppm
, to around 18 (guessing at the 18, it wasn't quite up to 20).
I've removed the sock, and a day later its back down to what I'd say is a 15 (midway from 10 to 20).
Feeding has been sparse - every other day. No deaths (except for a small chocolate chip star that decided to climb over my sump baffle and into a return pump and lost 3 arms - it lived a few days after that). No other changes.
All other params are normal. 0 ammonia, 0 nitrite, Ca
420, pH 8.07, sG
Could this be the sock causing this?
I'm not due for a PWC
for another week. If NO3
stays where it is, or drops, I'll hold off. If it continues to climb, I'll have to do another one soon.
Anyway - do berlin sump socks contribute to NO3
production, as other filtration media do?
180G build thread
180G All-glass with dual megaflows in a custom stand
AquaC EV-180 skimmer
250 pounds LR
160 pounds aragonite
Custom acrylic sump from GlassCages.com
2xPCX-40 return pumps
2x250MH 14K, 2x175MH 14K - PFO lighting, 2x65W PC
No-name 36W UV
Water General 125GPH RO/DI