Species you are culturing:
Make-up Water Source:
We are assuming that clean source water is used, low in nutrients and without unusually high mineral concentrations. If in doubt, send a water sample to a reputable laboratory and fax us the results.
Where does your water come from (city, well, reservoir, etc.)?:
Make-up water flow rate:
% of total volume replaced per day.
Maximum sustained pH (12-hour period):
Note: High pH = high un-ionized ammonia (NH
3) = low allowable total ammonia (TAN) = reduced nitrification = bigger biofilter.
Dissolved oxygen concentration of water entering the biofilter:
Total system water volume treated by biofilter:
Individual average body weight at harvest time:
Maximum number of animals served by the biofilter at time of harvest:
Typical feed rate prior to harvest:
percent of body weight per day.
Feeding frequency prior to harvest (give times of day):
Feed protein content:
Feed type (describe):
Solids Filtration: Fish waste must be filtered out prior to the biofilter. This will reduce biofilter fouling and heterotrophic bacterial activity.
Solids removal system (describe):
Solids, size filtered:
Biofilter Type Preferred
Bead (Bio-Clarifier) Fluidized Sand.
Rotating Biol. Contractor (RBC)
Low-Space Bioreactor (Moving Bed)
If you have information on one-pass total ammonia nitrogen (TAN) removal efficiency for the biofilter type you wish to use, please specify:
Describe the water quality conditions under which this one-pass ammonia removal was achieved:
Further describe your system and biofiltration requirements
If possible, please provide us with the feed chart you intend to use for your species based on weight and water temperature.
Note: Our calculations are based on standard aquacultural engineering methods and current scientific studies.