QUOTE(Maeda @ Jul 3 2007, 03:18 PM)

Hey everybody it's steve weast! Thanks for hopping aboard and posting!
I did have a few things tumbling around in my head...
Is there a good median range of temps to keep animals? or did you pick a specific area, and emulated their temps?
I was thining of just under 60 degrees F.
What kind of water quality do these guys need? I've been reading, and looking around up the coast and it seems like the water is pretty rich with nutrients. These conditions look pretty tough to recreate in such a small closed system, so i'm guessing feeding is the only option for now.
Do you have any specific livestock recommendations? What are you having an easy time caring for? What can't you keep?
Where can I find out relative sizes for these creatures? It looks like everything gets pretttyyyyyy large.
Thanks for the time!
The proper temperature range is much broader in cold water tanks than its tropical cousin. When I dive in the PNW, the temperature ranges from a low of 38 F in winter to about 62F in summer......but, most of the time, I'd say the temp is around 50F - 55F. If I were keeping solely PNW critters, then I'd shoot for 50F. Since I also have a few Tasmania critters......who are used to a little higher temperature range ( say 55 F -60F) most of the time..... I have chosen to keep the tank at 55 F. Your temperature selection should be chosen with your livestock's origins in mind....but, in general, I'd say that you should be looking for something around the 55F range. Try not to choose a temp that is at an extreme......just because a region may occassionally see a 68F temp, doesn't mean tthat a 68F reef will spell long term success. Some folks also seem to think that since the source is from a tidepool that they can tolerate higher temps. Our tidepools up here are just as cold as the ocean and they get flushed with new cold water with every tide.
I wouldn't necessarily say that the water quality is poor in cold water. I'd rather say that it is teaming with life that feeds the animals.....much more so than on the relatively barren tropical reefs. In Spring and in Summer, I swim through thick clouds of phyto and plankton.....but, the water isn't high in PO4, NO3 or NO2, or fouled in any way. We just need to feed constantly and deal with the associated waste through skimming and water changes. It is true that the life in the Eastern Pacific is dependant upon deep nutrient upwellings.....I just don't think that translates into poor water quality....just water with lots of food and life.
As for livestock recommendations....I'd stay away from small mouth livestock like sponges, large barnacles, and cucumbers that filter feed. I'd also stay away from the large green tidepool anemones that are photosynthetic. In a cold water system where you are providing proper amounts of food, you'll find that you will fight a losing battle with algae if your tank is highly lit. I used to grow bull kelp quite successfully just under T5's.....but, the long hours of light needed to grow kelp, also grew algae and made the tank look terrible. I now only have full lights on (2 T5's over each tank) for 3 -4 hours a day. For the rest of the "daylight" time, the tanks just receive a general low light from a light in the equipment room. Since adopting this lighting regiment, the tanks never looked better....with minimal algae growth....and little maintenance. The critters that have been the easiest to care for are the larger anemones and the brooding anemones.
The size question is a hard one....I choose which critter from what I see while diving.....but for a small tank...I'd just stick with brooding anemones and strawberry anemones (which are hard to collect).
QUOTE(Jamie @ Jul 3 2007, 03:45 PM)

IMO the biggest problem with nudis is that they only have a lifespan of 1 year, so if you get one full grown, your not going to have it very long. It's hard to ever really be able to claim "long term success" because of it dies, it could've just been at the end of it's life span.
On an entirely unrelated note, you wouldn't happen to be related to Michael Weast, would you?
That is possibly true....although, I have not seen any lifespan data on our particular nudibranchs. I might have to revist that issue....since I see nudibranchs on every dive.
No relation to a Michael Weast.