First off this is not an attack on Shawn or his post, but an attempt to clarify and get technical on something that seems to be repeated many times with what I would debate is not enough information to make any kind of conclusion. In a sense this topic is similar in my mind to the one person that speaks up and says they have a copper banded butterfly and thinks they are easy to keep should realize they are the exception to the rule and may not be doing a great service to anyone by speaking up against those who are saying they are hard to keep.
If we want to graduate this forum to a level beyond others and do myth busters and other things that are good for hobbyist, the animals, and natural reefs I think it is a good idea to discuss and examine topics such as this one.
I could debate this topic all day, but as it stands I am a firm believer in the diet I feed my tang and I have never personally had ill effects on my chemistry because of it. I also had a large variety of clients, with a large variety of tangs and aquariums use a variety of SeaVeggies without any significant increase in pest algae, bacteria, or other unsightly items.(nor a dramatic increase in skimmate produced, or required filter media or water changes)
I’ve seen probably close to hundreds of malformed tangs either at clients while with my former employer or tangs brought back to LFS from customers. 99% of the time I can tell a tang which has been kept in captivity for a year or more and is then returned to an LFS. Often times they get to the point where they not only have shorter fins than normal, but they plain out look ugly with just stubby little fins and other problems such as lateral line. I’ve seen many where their lips receded from their mouths showing teeth. I’m talking ugly sick fish.
It may be true that feeding these foods is not required all of the time. But seriously who has identified to species every algae in their tank? Who now even remembers what islands the rocks in your tank were collected from? How many of us strive to reach an algae free aquarium and who would stop short of it thinking, oh I don’t want my algae diversity to weaken for my tang, better let that algae overgrow Joe the Coral…
When discussing on a forum you have to also consider the masses which may look up experienced reefers typing their opinions. They may not realize the difference between their cyano filled nano vs the experienced reefers mature 200+g system which(this is important) contains a refugium.(which is a refuge from not only predation on small crustaceans desired by mandarins, but a refuge for algae from grazing herbivores)
One question I would have Shawn is what you have experience with. I seem to recall someone telling me you had nutrient problems in the past while you were feeding nori and any time you discuss the topic you mention “noriâ€ÂÂÂÂÂÂÂ. I agree that I wouldn’t personally put a product designed for humans in my tank.(especially one with foreign writing on it I can’t even read) Have you tried Porphyra yezoensis, Palmaria palmate, or Porphyra umbilicalis that were specifically packaged for the aquarium industry?(link)
Regarding the foods you mentioned specifically, “spirulanaâ€ÂÂÂÂÂÂÂ, and the vitamins, I think these are great and should be added, but I am not sure they are enough alone. I witnessed tangs suffer after being on a strict diet of only San Francisco bay frozen multipack saltwater cubes which contains marine cuisine, emerald entree, squid, and omega-3 enriched brine shrimp. While this contains emerald entrée which contains spirulina and other vitamins and stuff it was not enough for these tangs. (note I don’t know how much of each ingredient is in the food and do not know if a lack of total food was a contributor to the issue as well)
This is not an extremely well thought out or researched paper written here just some thoughts. Heck this is a forum, if I wanted to finish a scientific paper I’d be submitting it elsewhere. That being said, shoot some holes in my arguments above and let’s hash this thing out.
slap-stick
What are your opinions on this subject?
BRING IT ON!
Side note: I had always thought Emerald entrée was marketed as a good food for herbivores. Check out the first 4 ingredients: Artemia Franciscana, mysis, krill, and plankton??? (note this manufacturer is not required to put their ingredients in order by abundance.)
abcd for listening.