I’ve revised out the idea I had for the baby brine shrimp culture tank (from hereon, to be referred to as the BBSCT). In my Nassarius tank, I’ve been having a cyanobacteria bloom because we love our snails a little too much and obviously overfed them. When there’s food leftover in the tank, it’s a clear sign you are loving your animals too much! That was a good warning sign to me that using biological filtration is going to work, until it doesn’t, and then it’s too much work to fix it again. Mainly I am concerned about another cyanobacteria outbreak because the Chaetomorpha has to come somewhere, and that somewhere always has cyanobacteria samples.
I have some old Marineland Penguin Bio-Wheel filters lying around, which made me revise the plan to primarily use mechanical filtration to keep the BBSCT clean. The size A penguin filters have a kind of gauze filter to catch bits, followed by active carbon and finally the bio-wheel will contain nitrifying bacteria. They are disposable and replaceable, which is helpful in case you have to sterilize and bleach the tank due to an outbreak.
So far my plan is as follows:
- 1 Aqueon 33 long aquarium (48.3″ x 12.8″ x 13.4″)
- 2 Marineland Penguin 100B filters (100 gallons/hr each)
- 3-5 Lee’s net fish breeder
- 1 5-pack PET mesh square (105 micron opening, 52% open area)
After hatching the brine shrimp eggs, they will be dumped into the BBSCT for maturation into instar II phase and then feeding. Any further enrichment will be done the day before in a separate vessel (possibly just a Pyrex dish, with an airline and a drop of SELCO) before immediate feeding. The concept is now to make the keeping of the baby brine shrimp as convenient as possible so that enrichment is not so much of a hassle. I have yet to find a way to store dense amounts of baby brine shrimp past 24 hrs in refrigeration without making gathering them up another chore with the sieve.
UPDATE: After finding the Food Agriculture Organization of the United Nations manuals on Artemia breeding, it turns out this prototype is exactly what they describe as a “rinser/concentrator”. The Artemia nauplii are not stored in it for a long time, but they are rinsed long enough that oxygen deprivation is a concern, hence the filters and water flow. The only other difference is the inversion of the compartments. Based upon photos, it looks like the nauplii typically go into the outer tank, with water trickling into the mesh cube for suction and removal. I’m doing the opposite, with the nauplii being in the mesh cube and the tank circulates the water into my hang-on-back filter.