Shane, If you are interested, I will look for the photos I took at the Monterey Bay Aquarium in California a couple of years ago. They had built a device that created the type of surge you are talking about, there was a Plexiglas tank mounted above the aquarium, it would fill up to a point and then dump back down into the tank. The only moving part was the pump sending the water up to the surge tank. It was all done through a utube shaped piece inside the surge tank.
Guy -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Shane Clays Sent: Friday, October 05, 2001 2:28 PM To: '[EMAIL PROTECTED]' Subject: RE: Ooops... Agreed 100% my online friend! Your point on the powerheads is well taken. Its like taking a large scale surge device vs a powerhead. Its the way the water is being disspursed. You could probably, in theory, surge the volume of your tank mulitple times in the course of an hour, and every animal in their would love it. You try and do the same with a powerhead, and you are going to have an area where nothing will ever grow, then only something that can handle a crap load of current will grow, and so on down the line. It is discouraging to me as an aquarist, becuase it is impossible to recreate that surge type flow that you see in the ocean. It is amazing watching the ocean shows on tv, and they show something like kelp and it is swaying back and forth. Traveling feet from point a to point b and back again. That is whay corals in nature dont have the build up of detritus and such like you can get in an aquarium. Anyways, points well taken, and agreed with 100%! Shane > -----Original Message----- > From: Payne, James E [SMTP:[EMAIL PROTECTED]] > Sent: Friday, October 05, 2001 2:20 PM > To: '[EMAIL PROTECTED]' > Subject: RE: Ooops... > > > Maybe the SPS would do fine under what I consider conditions > > appropriate for > > LPS? Maybe it is just the tolerances of the SPS vs. the LPS? > > Maybe I am just > > a marble head! :-) > > I think Eric's main point is that to really determine what a coral needs > to > thrive, we can generalize for a starter guess, but it's not really > dependent > on LPS or SPS type differentiation. Biologically they're the same thing > pretty much. What really makes the difference is what conditions the > particular specimen we have came from (and that's the information we're > most > likely to not have unfortunately). Corals will, if given the chance, grow > in such a way that they have the maximum survival chance in the > environment > they find themselves in. If they're suddenly moved to a totally different > environment, they have a problem because the form they've grown up with is > potentially no longer suitable for the conditions (and certainly isn't > optimal). A great example of this is seen with lighting. If you move a > bright purple acro from a tank with 400W 20KK lights to a tank with 400W > 6.5KK lights, you will probably see the color change completely within a > month or so. That's the much touted photoadaptive response. > > When talking about flow, one thing I learned (and it's the subject of the > thread I pulled that comment from) is that there's a big difference > between > the flow from a strong ocean current (usually turbulent) and the flow a > few > inches from a powerhead (lamellar). The flow from the powerhead will > probably blast the coral into the next life, even on a on/off timer. > > If you're a marble head, then I am certainly one too :-). > > James Payne > [EMAIL PROTECTED] > ________________________________________ > > LEAVING THE LIST > ================ > To stop receiving messages you will need to send a message to > [EMAIL PROTECTED] with a command to remove you from the > list. The list manager controls who belongs to the list. > > For example: > -------------------------------------------------------------- > From: John Doe <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED] > Subject: <not needed> > > UNSUBSCRIBE > -------------------------------------------------------------- ________________________________________ LEAVING THE LIST ================ To stop receiving messages you will need to send a message to [EMAIL PROTECTED] with a command to remove you from the list. The list manager controls who belongs to the list. For example: -------------------------------------------------------------- From: John Doe <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: <not needed> UNSUBSCRIBE -------------------------------------------------------------- ________________________________________ LEAVING THE LIST ================ To stop receiving messages you will need to send a message to [EMAIL PROTECTED] with a command to remove you from the list. The list manager controls who belongs to the list. For example: -------------------------------------------------------------- From: John Doe <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: <not needed> UNSUBSCRIBE --------------------------------------------------------------
