https://data.amerigeoss.org/dataset/1f629c40-9018-4720-bcaf-7afaffa5af35
type: Dataset
description: This dataset includes data collected to determine the effects of formaldehyde on nitrification processes in biofilters of recirculating aquaculture systems (RAS) from two field trials. Biofilter nitrification was monitored by measuring the levels of total ammonia nitrogen, nitrite, and nitrate in experimental aquaria containing a small biofilter before and after formaldehyde was applied to the test system.
issued: 2025-11-20T09:21:08.141008
modified: 20210820
title: Determine the effect of Parasite-S (formalin), administered to control mortality from saprolegniasis, on the nitrogen oxidation efficiency of the biofilters of recirculating aquaculture systems (RAS) for freshwater finfish – Field Trials
contact point: Organization
  fn: Kim T Fredricks
keyword: amerigeo
keyword: amerigeoss
keyword: aquaculture
keyword: ckan
keyword: geo
keyword: geoss
keyword: national
keyword: nitrification
keyword: nitrobacter
keyword: nitrosomonas
keyword: north-america
keyword: ras
keyword: recirculating-aquaculture-systems
keyword: united-states
keyword: usgs-58d158fae4b0236b68f6b710
theme: {geospatial}

Digital Data
type: Distribution
description: Landing page for access to the data
format: XML
issued: 2022-06-10T00:42:33.551006
modified: 2025-11-20T09:21:08.132297
access URL: https://doi.org/10.5066/F7R78CDT
media type: application/http

Original Metadata
type: Distribution
description: The metadata original format
format: XML
issued: 2022-06-10T00:42:33.550995
modified: 2025-11-20T09:21:08.131870
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.58d158fae4b0236b68f6b710.xml
media type: text/xml

US Migrating
type: Agent